Production-limiting and Reportable Diseases

Abi Younes, J.N., Campbell, J.R., Otto, S.J.G., Gow, S.P., Woolums, A.R., Jelinski, M., Lacoste, S., Waldner, C.L., 2024. Variation in pen-level prevalence of BRD bacterial pathogens and antimicrobial resistance following feedlot arrival in beef calves. Antibiotics, 13:322. https://doi.org/10.3390/antibiotics13040322

Deschner, D., Periyasamy, D., Waldner, C., Fernando, C., Hill, J., 2023. Complete genome sequence of Mannheimia bovis isolated from a healthy feedlot calf in Saskatchewan, Canada. Microbiology Resource Announcements, e00456-00423. https://doi.org/10.1128/MRA.00456-23

Erickson, N., Waldner, C., April, S., Ellis, J., 2023. Comparison of post-weaning BRD treatment rates between non-vaccinated control and variably primed and boosted beef calves using commercially available bovine coronavirus vaccines. Canadian Veterinary Journal, 65(3):250-258.

Younes, J.A., Ramsay, D.E., Lacoste, S., Deschner, D., Hill, J.E., Campbell, J. and Waldner, C.L., 2022. Changes in the phenotypic susceptibility of Mannheimia haemolytica isolates to macrolide antimicrobials during the early feeding period following metaphylactic tulathromycin use in western Canadian feedlot calves. The Canadian Veterinary Journal, 63(9): 920-928.

Freeman, C.N., Herman, E.K., Abi Younes, J., Ramsay, D.E., Erikson, N., Stothard, P., Links, M.G., Otto, S.J. and Waldner, C., 2022. Evaluating the potential of third generation metagenomic sequencing for the detection of BRD pathogens and genetic determinants of antimicrobial resistance in chronically ill feedlot cattle. BMC Veterinary Research, 18(1): 1-15. https://doi.org/10.1186/s12917-022-03269-6

Wennekamp, T.R., Waldner, C.L., Windeyer, M.C., Larson, K., Trokhymchuk, A. and Campbell, J.R., 2022. Antimicrobial resistance in bovine respiratory disease: Auction market-and ranch-raised calves. The Canadian Veterinary Journal, 63(1): 47.

Erickson, N., Berenik, A., Lardner, H., Lacoste, S., Campbell, J., Gow, S., Waldner, C., Ellis, J., 2021. Evaluation of bovine respiratory syncytial virus (BRSV) and bovine herpesvirus (BHV) specific antibody responses between heterologous and homologous prime-boost vaccinated western Canadian beef calves. The Canadian Veterinary Journal, 62(1): 37-44.

Erickson, N., Berenik, A., Lardner, H., Lacoste, S., Campbell, J., Gow, S., Waldner, C., Ellis, J., 2019. Comparison of bovine viral diarrhea virus-specific antibody responses of young beef calves vaccinated with either modified live virus or inactivated virus regimens. The Canadian Veterinary Journal, 61(8): 871-874.

Erickson, N., Ellis, J., Waldner, C., Lardner, H., Gow, S., Campbell, J., Berenik, A., 2020. A field comparison of heterologous and homologous routes of administration of modified live vaccines for the control of bovine respiratory disease in recently weaned beef calves. The Canadian Veterinary Journal. 61(5):530-533.

O'Connor, A., Hu, D., Totton, S., Scott, N., Winder, C., Wang, B., Glanville, G., Wood, H., White, B., Larson, R., Waldner, C., Sargeant, J. (2019). A systematic review and network meta-analysis of bacterial and viral vaccines, administered at or near arrival at the feedlot, for control of bovine respiratory disease in beef cattle. Animal Health Research Reviews, 20(2): 143-162. https://doi.org/10.1017/S1466252319000288

O'Connor, A., Hu, D., Totton, S., Scott, N., Winder, C., Wang, B., Glanville, G., Wood, H., White, B., Larson, R., Waldner, C., Sargeant, J. (2019). A systematic review and network meta-analysis of injectable antibiotic options for the control of bovine respiratory disease in the first 45 days post arrival at the feedlot. Animal Health Research Reviews, 20(2): 163-181. https://doi.org/10.1017/S1466252320000031

Waldner, C., Jelinski, M., McIntyre-Zimmer, K., 2013. Survey of western Canadian beef producers regarding calfhood diseases, management practices, and veterinary service usage. Canadian Veterinary Journal, 54: 559-564.

Ellis, J., Waldner, C., Gow, S., Jackson, M. 2013. Relationship between pulmonary lesions and arterial pO2 and lactate concentrations in calves experimentally infected with bovine respiratory syncytial virus. Canadian Journal of Veterinary Research, 77: 205-210.

Waldner, C.L., Kennedy, R.I., Rosengren, L.B., Pollock, C.M., Clark, E.G., 2010. Gross postmortem and histologic examination findings from abortion losses and calf mortalities in western Canadian beef herds. Canadian Veterinary Journal. 51: 1227–1238.

Gow, S.P., Waldner, C.L., 2009. Antimicrobial drug use and reason for treatment in 203 western Canadian cow-calf 2 herds during calving season. Preventive Veterinary Medicine. 90: 55-65. https://doi.org/10.1016/j.prevetmed.2009.03.010

Ellis, J., Gow, S., West, K., Waldner, C., Rhodes, C., Mutwiri, G., Rosenberg, H.F., 2007. Response of calves to challenge exposure with virulent bovine respiratory syncytial virus following intranasal administration of vaccines formulated for parenteral administration. Journal of the American Veterinary Medical Association, 230: 233-243. https://doi.org/10.2460/javma.230.2.233

Ellis, J., Waldner, C. and Rhodes, C., 2005.  The Longevity of Clinical Immunity to Experimental Bovine Herpesvirus-1 Infection Induced by a Combination Modified-Live / Inactivated Vaccine in Beef Calves, Journal of the American Veterinary Medical Association, 227: 123-128.  https://doi.org/10.2460/javma.2005.227.123

Ellis, J., West, K., Waldner, C. and Rhodes, C., 2004.  Efficacy of a Saponin-adjuvanted Inactivated Respiratory Syncytial Virus Vaccine in Calves, Canadian Veterinary Journal, 46: 155-162.

Erickson, N.E.N., Lanigan, E., Waugh, T., Gesy, K., Waldner, C. 2017. Evaluation of long-acting oxytetracycline and a commercial monovalent vaccine for the control of Campylobacter fetus subsp. venerealis infection in beef bulls. Canadian Veterinary Journal, 58(10): 1051-1058.

García-Guerra, A., Waldner, C.L., Pellegrino, A., Macdonald, N., Chaban, B., Hill, J.E., Hendrick, S.H., 2016. Effect of sample pooling and transport conditions on the clinical sensitivity of a real-time polymerase chain reaction assay for Campylobacter fetus subsp. venerealis in preputial samples from bulls. Canadian Journal of Veterinary Research, 80(1): 32-39. 

Waldner, C.L., Parker, S., Gesy, K.M., Waugh, T., Lanigan, E., Campbell, J.R., 2017. Application of direct PCR assays for Campylobacter fetus subsp. venerealis and Tritrichomonas foetus to screen preputial samples from breeding bulls in western Canadian cow-calf herds. Canadian Journal of Veterinary Research, 81(2): 91-99. 

Garcia Guerra, A., Chaban, B., Hill, J.E., Waldner, C., Hendrick, S., 2014. Clinical sensitivity and specificity of a real time PCR assay for bovine genital campylobacteriosis in direct preputial samples. American Journal of Veterinary Research, 75(6): 851-860. https://doi.org/10.2460/ajvr.75.9.851

Garcia Guerra, A., Hill, J.E., Campbell, J., Waldner, C., Hendrick, S., 2014. Use of pooled protozoal cultures of preputial scraping samples obtained from bulls for the detection of Tritrichomonas foetus by means of a real-time polymerase chain reaction assay. Journal of the American Veterinary Medical Association, 244(3): 352-356. https://doi.org/10.2460/javma.244.3.352

Garcia Guerra, A., Hill, J.E., Campbell, J., Waldner, C., Hendrick, S., 2013 Sensitivity of a real time polymerase chain reaction for tritrichomonas foetus in direct individual and pooled preputial samples. Theriogenology, 80(9): 1097-1103. https://doi.org/10.1016/j.theriogenology.2013.08.011

Chaban, B., Garcia Guerra, A., Hendrick, S., Waldner, C., Hill, J.E. 2013. Isolation rates of Campylobacter fetus subsp venerealis from bovine preputial samples via passive filtration on nonselective medium versus selective medium, with and without transport medium. American Journal of Veterinary Research, 74: 1066-1069. https://doi.org/10.2460/ajvr.74.8.1066

Waldner, C.L., Hendrick, S., Chaban, B., Garcia Guerra, A., Griffin, G., Campbell, J., Hill, J.E., 2013. Application of a new diagnostic approach to a Bovine Genital Campylobacteriosis outbreak in a Saskatchewan beef herd. Canadian Veterinary Journal, 54: 373-376.

Chaban, B., Chu, S., Hendrick, S.,Waldner, C., Hill, J.E. 2012. Evaluation of a Campylobacter fetus subspecies venerealis real-time quantitative PCR for direct analysis of bovine preputial samples. Canadian Journal of Veterinary Research, 76: 166-173.

Van De Weyer, L.M., Hendrick, S., Rosengren, L., Waldner, C.L., 2011. Leptospirosis in beef herds from western Canada: Serum antibody titres and vaccination practices. Canadian Veterinary Journal, 52: 619–626.

Erickson, N., Godson, D., Gow, S., Lacoste, S., Waldner, C., Ellis, J., 2023. Comparative efficacy of modified-live and inactivated vaccines in boosting disease-sparing responses to bovine viral diarrhea virus challenge in neonatally mucosally primed weanling beef calves. The Canadian Veterinary Journal, 64(4): 321-328.

Erickson, N., Berenik, A., Lardner, H., Lacoste, S., Campbell, J., Gow, S., Waldner, C., Ellis, J., 2019. Comparison of bovine viral diarrhea virus-specific antibody responses of young beef calves vaccinated with either modified live virus or inactivated virus regimens. The Canadian Veterinary Journal, 61(8): 871-874.

Waldner, C.L., Kennedy, R.I., 2008. Antibodies for Bovine Viral Diarrhea Virus and Infectious Bovine Rhinotracheitis Virus, and persistent infection with BVDV in beef calves at weaning and health and performance in cow-calf herds. American Journal of Veterinary Research, 69: 916-927.

Waldner, C.L., 2005. Serological Status for N. Caninum, Bovine Viral Diarrhea Virus, and Infectious Bovine Rhinotracheitis Virus at Pregnancy Testing and Reproductive Performance in Beef Herds, Animal Reproduction Science, 90: 219-242.

Waldner, C.L. and Campbell, J.R., 2005. Using Serology as a Predictor of the Presence of a Calf Persistently Infected with BVDV Beef Herds, American Journal of Veterinary Research, 66: 825-834.

Waldner,  C.L., Cunningham, G. and Campbell, J.R., 2004. Assessing Agreement Between Three Serological Tests for Neospora Caninum in Beef Cattle, Journal of Veterinary Diagnostic Investigation, 16: 313-315.

Waldner, C.L., Booker, C., and Guichon, G.T., et. al., 2004.  Determination of the Seroprevalence of Neospora Caninum in Feedlot Steers in Alberta. Canadian Veterinary Journal, 45: 218-224.

Waldner, C.L., 2002. Precolostral Antibodies to Neospora caninum in Beef Calves Following an Abortion Outbreak and Associated Fall Weaning Weights. Bovine Practitioner, 36: 81-85.

Waldner, C., Henderson, J., Wu, J.T., Coupland, R. and Chow, E.Y.W., 2001. Seroprevalence of Neospora Caninum in Beef Cattle in Northern Alberta, Canadian Veterinary Journal, 42: 130-132.

Waldner, C., Henderson, J., Wu, J.T., Coupland, R. and Chow, E.Y.W., 2001. Continued Reproductive Losses in a Cow-Calf Herd Associated with Neospora Caninum Following an Abortion Epidemic. Canadian Veterinary Journal, 42: 355-360.

Waldner, C.L., Janzen, E.D., Henderson, J. and Haines, D.M., 1999. An Outbreak of Abortion Associated with Neospora caninum Infection in a Beef Herd. Journal of the American Veterinary Medical Association, 215: 1485-1490.

Waldner, C.L., Janzen, E.D. and Ribble, C.S., 1998. Determination of the Association Between Neospora caninum Infection and Reproductive Performance in Beef Herds. Journal of the American Veterinary Medical Association, 213: 685-690.

Johnson, P., McLeod, L., Qin, Y., Osgood, N., Rosengren, L., Campbell, J., Larson, K., and Waldner, C., 2022. Investigating effective testing strategies for the control of Johne’s disease in western Canadian cow-calf herds using an agent-based simulation model. Frontiers in Veterinary Science, 9:100314. https://doi.org/10.3389/fvets.2022.1003143

Johnson P, Marfleet T, Waldner C, Parker S, Campbell J., 2022. Seroprevalence of Mycobacterium avium spp. paratuberculosis in cow-calf herds located in the prairie provinces of Canada. Canadian Veterinary Journal, 63(12):1247-1251. 

Johnson P, McLeod L, Campbell J, Rousseau M, Larson K, Waldner C., 2022. Estimating the sensitivity and specificity of serum ELISA and pooled and individual fecal PCR for detecting Mycobacterium avium subspecies paratuberculosis in Canadian cow-calf herds using Bayesian latent class models. Frontiers in Veterinary Science, 9: 937141. https://doi.org/10.3389/fvets.2022.937141

Checkley, S.L., Waldner, C.L., Appleyard, G., Campbell, J.R. and Janzen, E.D., 2003. The Comparison of 5 Diagnostic Tests for Diagnosis of Johne’s Disease in Western Canada. Journal of Applied Research in Veterinary Medicine, 1: 196-205.

Waldner, C.L., Cunningham, G.L., Janzen, E.D. and Campbell, J.R., 2002. Survey of Mycobacterium avium Subspecies Paratuberculosis Serological Status in Beef Herds on Community Pastures in Saskatchewan. Canadian Veterinary Journal, 43: 542-546.

Waldner, C.L., 2005. Serological Status for N. Caninum, Bovine Viral Diarrhea Virus, and Infectious Bovine Rhinotracheitis Virus at Pregnancy Testing and Reproductive Performance in Beef Herds, Animal Reproduction Science, 90: 219-242.  (*Johne’s seroprevalence values are also reported in this paper.) http://dx.doi.org/10.1016/j.anireprosci.2005.03.017

Gow, S., Waldner, C.L. and Ross. C., 2005. The Effect of Duration of Treatment on Weaning Weights in a Cow-calf Herd with a Protracted Severe Neonatal Scours Outbreak, Canadian Veterinary Journal, 16: 418-425.

De Seram, E.L., Redman, E.M., Wills, F.K., de Queiroz, C., Campbell, J.R., Waldner, C.L., Parker, S.E., Avramenko, R.W., Gilleard, J.S. and Uehlinger, F.D., 2021. Regional Heterogeneity and an Unexpectedly High Abundance of Cooperia Punctata in Beef Cattle at Northern Latitude Were Revealed by ITS-2 rDNA Nemabiome Metabarcoding. Parasites Vectors, 15(17). https://doi.org/10.1186/s13071-021-05137-y

Wills, F., Waldner, C., Campbell, J., Pollock, C., Uehlinger, F., 2019. Gastrointestinal nematode prevalence and fecal egg counts in beef cattle from western Canada. The Canadian Veterinary Journal, 61(6): 605-612

Wills, F.K., Campbell, J.R., Parker, S.E., Waldner, C.L., Uehlinger, F.D. 2020. Gastrointestinal nematode management in western Canadian cow-calf herds. Canadian Veterinary Journal, 61(4): 382-388

Jelinski, M., Gilleard, J., Rocheleau, L., Royan, G., Waldner, C.L. 2017. Epidemiology of gastrointestinal nematode infections in grazing yearling beef cattle in Saskatchewan. Canadian Veterinary Journal, 58(10): 1044-1050.

Jelinski, M., Lanigan, E., Gilleard, J., Waldner, C.L., 2016. Survey of gastrointestinal nematode parasites in Saskatchewan beef herds. Canadian Veterinary Journal, 57(2): 160-163. February 2016.

Gow, S., Waldner, C.L., 2006. An Examination of the Prevalence of and Risk Factors for Shedding of Cryptosporidium spp. and Giardia spp. in Cows and Calves from Western Canadian Cow-calf Herds. Veterinary Parasitology, 137: 50-61.

Jelinski, M.D., Waldner, C.L., Penner, G. 2017. Case-control study of mineral concentrations of hoof horn tissue derived from feedlot cattle with toe tip necrosis syndrome. Canadian Veterinary Journal, 59(3): 254-260.

Clark, C., Petrie, L., Waldner, C.L., and Wendell, A., 2004. Characteristics of the Bovine Claw Associated with the Presence of Vertical Fissures (Sandcracks), Canadian Veterinary Journal, 45: 585-593.

Epp, T., Waldner, C., Argue, C., 2010. Case-control study of farms during an anthrax outbreak in Saskatchewan, 2006. Canadian Veterinary Journal, 51: 963-972.

Epp, T., Argue, C., Waldner, C., Berke, O., 2009. Spatial analysis of Anthrax cases in Saskatchewan, 2006. Canadian Veterinary Journal, 51: 743-748.

Wennekamp, T.R., Waldner, C.L., Parker, S., Windeyer, M.C., Larson, K., Campbell, J.R., 2021. Biosecurity practices in western Canadian cow-calf herds and their association with animal health. Canadian Veterinary Journal, 62(7): 712-718.

AMR and AMU

Abi Younes, J.N., Campbell, J.R., Otto, S.J.G., Gow, S.P., Woolums, A.R., Jelinski, M., Lacoste, S., Waldner, C.L., 2024. Variation in pen-level prevalence of BRD bacterial pathogens and antimicrobial resistance following feedlot arrival in beef calves. Antibiotics, 13:322. https://doi.org/10.3390/antibiotics13040322

Fossen, J.D., Campbell, J.R., Gow, S.P., Erickson, N., Waldner, C.L., 2024. Antimicrobial resistance in Enterococcus isolated from western Canadian cow-calf herds. BMC Veterinary Research, 20:6. https://doi.org/10.1186/s12917-023-03843-6.

Fossen, J.D., Campbell, J.R.,  Gow, S.P., Erickson, N., Waldner, C.L., 2023. Antimicrobial resistance in generic E. coli isolated from western Canadian cow-calf herds. Canadian Veterinary Journal, 65(2):146-155.

Fossen, J.D., Erickson, N., Gow, S.P., Campbell, J.R., Waldner, C.L., 2023. Producer attitudes regarding antimicrobial use and resistance in Canadian cow-calf herds. Canadian Veterinary Journal, 60(4):391-398.

Wilhelm, B., Fossen, J.D.,Waldner, C.L., 2023. A scoping review of antimicrobial usage and antimicrobial resistance in beef cow-calf herds in the United States and Canada. Antibiotics, 12, 1177. https://doi.org/10.3390/antibiotics12071177

Fossen, J.D., Campbell, J.R., Gow, S.P., Erickson, N., Waldner, C.L., 2023. Antimicrobial use in Canadian cow-calf herds. Veterinary Sciences, 10(5):366. https://doi.org.10.3390/vetsci10050366.

Strong, K.M., Marasco, K.L., Invik, J., Ganshorn, H., Reid-Smith, R.J., Waldner, C.L.,  Otto, S.J.G., Kastelic, J.P., Checkley, S.L., 2023. Factors associated with antimicrobial resistant enterococci in Canadian beef cattle: A scoping review. Frontiers in Veterinary Science, 10:1155772. https://doi.org/10.3389/fvets.2023.1155772

Waldner, C., Wilhelm, B., Windeyer, M.C., Parker, S., Campbell, J. 2022. Improving beef calf health: frequency of disease syndromes, uptake of management practices following calving, and potential for antimicrobial use reduction in western Canadian herds. Translational Animal Science, 6(4) October 2022, txac151, https://doi.org/10.1093/tas/txac151.

Younes, J.A., Ramsay, D.E., Lacoste, S., Deschner, D., Hill, J.E., Campbell, J. and Waldner, C.L., 2022. Changes in the phenotypic susceptibility of Mannheimia haemolytica isolates to macrolide antimicrobials during the early feeding period following metaphylactic tulathromycin use in western Canadian feedlot calves. The Canadian Veterinary Journal, 63(9): 920-928.

Freeman, C.N., Herman, E.K., Abi Younes, J., Ramsay, D.E., Erikson, N., Stothard, P., Links, M.G., Otto, S.J. and Waldner, C., 2022. Evaluating the potential of third generation metagenomic sequencing for the detection of BRD pathogens and genetic determinants of antimicrobial resistance in chronically ill feedlot cattle. BMC Veterinary Research, 18(1): 1-15.

Wennekamp, T.R., Waldner, C.L., Windeyer, M.C., Larson, K., Trokhymchuk, A. and Campbell, J.R., 2022. Antimicrobial resistance in bovine respiratory disease: Auction market-and ranch-raised calves. The Canadian Veterinary Journal, 63(1): 47.

Waldner, C.L., Gow, S., Parker, S., Wilson, D., Campbell, J.R., 2019. Attitudes towards antimicrobial use and factors associated with antimicrobial use in western Canadian cow-calf herds. Canadian Veterinary Journal, 60(4):391-398..

Waldner, C.L., Gow, S., Parker, S., Campbell, J.R., 2019. Antimicrobial resistance in fecal E. coli and Campylobacter spp. from beef cows in western Canada and associations with herd attributes and antimicrobial use. Canadian Journal of Veterinary Research, 83(2): 80-89.

Waldner, C.L., Gow, S., Parker, S., Wilson, D., Campbell, J.R., 2019. Antimicrobial usage in western Canadian cow-calf herds. Canadian Veterinary Journal, 60(3): 255-267.

Ramsay, D.E., Invik, J., Checkley, S.L., Gow, S., Osgood, N.D., Waldner, C.L., 2018. Application of dynamic modeling techniques to the problem of antibacterial use and resistance: a scoping review. Epidemiology and Infection, 146(16): 2014-2027, https://doi.org/10.1017/S0950268818002091.

Noyes, N.R., Benedict, K.M., Gow, S.P., Waldner, C.L., Reid-Smith, R.J., Booker, C.W., McAllister, T.A., Morley, P.S., 2016. Modeling considerations in the analysis of associations between antimicrobial use and resistance in feedlot cattle. Epidemiology and Infection, 144: 1313-1329. https://doi:10.1017/S0950268815002423.

Checkley, S., Campbell, J. Waldner, C., Chirino, M., and Dowling, T., 2010. A retrospective diagnostic laboratory survey of antimicrobial resistance in fecal Escherichia coli isolated from spring calves in Western Canada. Canadian Veterinary Journal, 51: 1283–1286.

Checkley, S., Campbell, J. Waldner, C., Chirino, M., and Janzen, E., 2009. Associations between antimicrobial use and the prevalence of antimicrobial resistance in fecal Escherichia coli from feedlot cattle in western Canada.  Canadian Veterinary Journal 51: 853–861.

Gow, S.P., Waldner, C.L., 2009. Antimicrobial drug use and reason for treatment in 203 western Canadian cow-calf 2 herds during calving season. Preventive Veterinary Medicine, 90: 55-65.

Gow, S.P., Waldner, C.L., 2009. Antimicrobial resistance and virulence factors stx1, stx2 and eae in generic Escherichia coli isolates from calves in Western Canadian cow-calf herds. Microbial Drug Resistance, 15: 61-67.

Gow, S.P., Waldner, C.L., Harel, J. Boerlin, P., 2008. Associations between antimicrobial resistance genes in fecal generic Escherichia coli isolates in western Canadian cow-calf herds. Archives of Environmental Microbiology, 74: 3658-3666.

Gow, S., C. Waldner, A. Rajic, M. McFall, Reid-Smith, R., 2008. Prevalence of antimicrobial resistance in fecal generic Eschericia coli isolated in western Canadian cow-calf herds. Part I: Beef calves. Canadian Journal of  Veterinary Research, 72: 82-90.

Gow, S., C. Waldner, A. Rajic, M. McFall, Reid-Smith, R.,  2008. Prevalence of antimicrobial resistance in fecal generic E. coli isolated in western Canadian cow-calf herds. Part II: Cows and cow-calf pairs. Canadian Journal of  Veterinary Research, 72: 91-100.

Food Safety

Seitzinger PJ, Tataryn J, Osgood N, Waldner C. 2019. Foodborne Outbreak Investigation: The Effect of Recall Inaccuracies on Food Histories. Journal of Food Protection, 82(6): 931-939.

Seitzinger, P.J., Osgood, N., Martin, W., Tataryn, J., Waldner, C. 2019. Compliance Rates, Advantages and Drawbacks of a Smartphone-based Method of Collecting Food History and Foodborne Illness Data. Journal of Food Protection, 82(6): 1061-1070. 

Caffrey, N., Invik, J., Waldner, C.L., Ramsay, D., Checkley, S.L., 2019. Risk assessments evaluating foodborne antimicrobial resistance in humans: a scoping review. Microbial Risk Analysis, 11: 31-46..

Majcher, K.B., Eichhorn, D.J., Waldner, C.L., Johnston, J.D., Clark, C.R., Jelinski, M., 2018. Assessing the sharpness of hypodermic needles after repeated use. Canadian Veterinary Journal, 59(10):1112-1114.

Nekouei, O., Checkley, S., Waldner, C., Smith, B., Invik, J., Carson, C., Avery, B., Sanchez, J., Gow, S., 2018. Exposure to antimicrobial-resistant Escherichia coli through the consumption of ground beef in Western Canada. International Journal of Food Microbiology,  272:41-48 https://doi.org/10.1016/j.ijfoodmicro.2018.02.022.

Trokhymchuk, A., Waldner, C., Chaban, B., Gow, S., Hill, J.E., 2014. Prevalence and diversity of Campylobacter species in Saskatchewan retail ground beef. Journal of Food Protection, 77(12): 2106-2110. doi: http://dx.doi.org/10.4315/0362-028X.JFP-14-247.

Trokhymchuk, A., Waldner, C., Gow, S., Chaban, B., Hill, J.E., 2014. Comparison of baseline bacterial levels in retail ground beef originating from different regulatory, processing and packaging environments. Journal of Food Protection, 77(3): 404–411, 2014 March doi:10.4315/0362-028X.JFP-13-331.

Hannon, S.J., Allan, B., Inglis, D., Waldner, C., Russell, M.L., Potter, A., Babiuk, B. and Townsend, H.G.G., 2009. Prevalence and Risk Factor Investigation of Campylobacter Species in Retail Ground Beef from Alberta, Canada. Food Protection Trends, 29(11),780-786. 

Hannon, S.J., Allan, B.,  Waldner, C., Russell, M.L., Potter, A., Babiuk, L., Townsend,  H.G.G., 2009. Prevalence and risk factor investigation of Campylobacter species and Campylobacter jejuni in beef cattle feces from seven large commercial feedlots in Alberta, Canada. Canadian Journal of Veterinary Research, 73, 275-282.

Hannon, S.J., E.N. Taboada, M.L. Russell, B. Allan, C. Waldner, H.L. Wilson, A. Potter, L. Babiuk, and H.G.G. Townsend. 2009. Genomics-based molecular epidemiology of Campylobacter jejuni isolates from feedlot cattle and people in Alberta, Canada. Journal of Clinical Microbiology, 47, 410-420.

Waldner, C.L., Checkley, S., Blakley, B., Pollock, C. and Mitchell, B., 2002. Managing Lead Exposure and Toxicity in Cow-Calf Herds Exposed to Discarded Lead Batteries. Journal of Veterinary Diagnostic Investigation, 14, 481-486.

Reproductive Performance

Waldner, C., Windeyer, M.C., Rousseau, M., Campbell, J., 2024. The Canadian cow-calf surveillance network – productivity and health summary 2018 to 2022. Frontiers in Veterinary Science, 11:1392166. https://doi.org/10.3389/fvets.2024.1392166

Waldner, C.L., Parker, S., Campbell, J.R., 2019. Identifying performance benchmarks and determinants for reproductive performance and calf survival using a longitudinal field study of cow-calf herds in western Canada. PLOS ONE, 14(7): 30219901. https://doi.org/10.1371/journal.pone.0219901 

Waldner, C. 2014. Cow attributes, herd management, and reproductive history events associated with abortion in cow-calf herds from Western Canada. Theriogenology, 81(6): 840-848. https://doi.org/10.1016/j.theriogenology.2013.12.016

Waldner, C.L., Garcia Guerra, A., 2013.  Cow attributes, herd management, and reproductive history events associated with the risk of nonpregnancy in cow-calf herds in Western Canada. Theriogenology, 79(7): 1083-1094. https://doi.org/10.1016/j.theriogenology.2013.02.004

Waldner, C.L., Kennedy, R.I., 2008. Antibodies for Bovine Viral Diarrhea Virus and Infectious Bovine Rhinotracheitis Virus, and persistent infection with BVDV in beef calves at weaning and health and performance in cow-calf herds. American Journal of Veterinary Research, 69: 916-927.

Waldner, C.L., 2005. Serological Status for N. Caninum, Bovine Viral Diarrhea Virus, and Infectious Bovine Rhinotracheitis Virus at Pregnancy Testing and Reproductive Performance in Beef Herds, Animal Reproduction Science, 90:, 219-242.

Waldner, C.L., Kennedy, R.I., Palmer, C.W., 2010. A description of the findings from bull breeding soundness evaluations and their association with pregnancy outcomes in a study of western Canadian beef herds. Theriogenology, 74:, 871-883. https://doi.org/10.1016/j.theriogenology.2010.04.012

Etson, C.J., Waldner, C.L. and Barth, A.D., 2004. Evaluation of a Segmented Rectal Probe and Caudal Epidural Anesthesia for Electroejaculation of Bulls. Canadian Veterinary Journal, 45: 235-240.

Palmer, C.W., Amudson, S.D., Brito, L.F., Waldner, C.L. and Barth, A.D., 2003. Use of Oxytocin and Closprostenol to Facilitate Semen Collection by Electroejaculation or Transrectal Massage in Bulls. Animal Reproduction Science, 80: 213-223.

Barth, A.D., Waldner, C.L., 2002. Factors Affecting Breeding Soundness Classification of Beef Bulls in Saskatchewan. Canadian Veterinary Journal, 43: 274-284.

Falk, A.J., Waldner, C., Cotter, B.S., Gudmundson, J., Barth, A.D., 2000. Effects of Epidural Lidocaine Anesthesia on Bulls During Electroejaculation. Canadian Veterinary Journal, 42: 116-120.

Nutrition

Waldner, C., Campbell, J., 2023. Trace mineral concentrations in Canadian beef calves at weaning. Canadian Veterinary Journal (In press 2023-0137).

Waldner, C.L., McLeod, L., Parker, S., Campbell, J. 2023. Update on copper and selenium in Canadian cow-calf herds – regional differences and estimation of serum reference values. Translational Animal Science, 7(1). https://doi.org/10.1093/tas/txad062

Evans, M., Ribeiro, G., Henry, D., Johnson, J., Campbell, J., Waldner, C., Penner, G., 2023. Effect of sodium sulfate concentration in drinking water for beef heifers, and the in vitro effect of bismuth subsalicylate on H2S production and fibre disappearance. Canadian Journal of Animal Science e-First. https://doi.org/10.1139/cjas-2023-0054. 

Evans, M., Ribeiro, G., Henry, D., Johnson, J., Campbell, J., Waldner, C., Penner, G., 2024. Effect of water sulfate and dietary bismuth subsalicylate on feed and water intake, ruminal hydrogen sulfide concentration, and trace mineral status of growing beef heifers. Journal of Animal Science, 102:skae031. https://doi.org/10.1093/jas/skae031

Waldner, C.L., Uehlinger, F.D., 2017. Factors associated with serum vitamin A and E concentrations in beef calves from Alberta and Saskatchewan and the relationship between vitamin concentrations and calf health outcomes. Canadian Journal of Animal Science, 97(1):65-82.

Waldner, C., Blakley, B. 2014. Evaluating micronutrient concentrations in liver samples from abortions, stillbirths, neonatal and postnatal losses in beef calves. Journal of Veterinary Diagnostic Investigation, 26(3): 376-389. https://doi.org/10.1177/1040638714526597 

Van De Weyer, L.M., Waldner, C.L., 2011. Geographic determinants of copper and molybdenum concentrations in serum at the end of the grazing season and associations with reproductive performance in beef cows from western Canada. Canadian Journal of Animal Science, 91: 423-431.

Waldner, C.L., Van De Weyer, L.M., 2011. Selenium status at the end of the grazing season, reproductive performance and degenerative myopathy in beef herds. Canadian Veterinary Journal, 52: 1083-1088.

Van De Weyer, L.M., Hendrick, S., Waldner, C.L., 2010. Serum micronutrient concentrations in beef cows before and after the summer grazing season. Canadian Journal of Animal Science. 90: 563-574, doi: 10.4141/cjas10036.

Van De Weyer, L.M., Hendrick, S., Waldner, C.L., 2010. Associations between pre-breeding serum micronutrient concentrations and pregnancy outcome in beef cows. Journal of the American Veterinary Medical Association. 238: 1323-1332.

Waldner, C., Campbell, J., Jim, K.G., Guichon, P.T. and Booker, C.W., 1998. Comparison of 3 methods of selenium assessment in cattle. Canadian Veterinary Journal, 39(4): 225-231.

Waldner, C. 2014. Cow attributes, herd management, and reproductive history events associated with abortion in cow-calf herds from Western Canada. Theriogenology, 81(6): 840-848; April 2014 doi: 10.1016/j.theriogenology.2013.12.016.

Waldner, C.L., Garcia Guerra, A., 2013.  Cow attributes, herd management, and reproductive history events associated with the risk of nonpregnancy in cow-calf herds in Western Canada. Theriogenology, 79: 1083-1094.

Waldner, C., 2014. Cow attributes, herd management and environmental factors associated with the risk of calf death at or within one hour of birth and the risk of dystocia in cow-calf herds in Western Canada. Livestock Science, 163:126-139. doi: 10.1016/j.livsci.2014.01.032

Elghafghuf, A., Stryhn, H., Waldner, C., 2014. A cross-classified and multiple membership Cox model applied to calf mortality data. Preventive Veterinary Medicine, 115(1): 29-38. http://dx.doi.org/10.1016/j.prevetmed.2014.03.012.

Jancewicz, L.J., Penner, G.B., Swift, M.L., Waldner, C.L., Gibb, D., McAllister, T.A., 2017. Predictability of growth performance in feedlot cattle using fecal near infrared spectroscopy. Canadian Journal of Animal Science, 97(4): 701-720. doi: 10.1139/CJAS-2016-0243.

Jancewicz, L.J., Penner, G.B., Swift, M.L., Waldner, C.L., Koenig, K.M., Beauchemin, K.A., McAllister, T.A. 2017. Predicting fecal nutrient concentrations and digestibilities and growth performance in feedlot cattle by near infrared spectroscopy. Journal of Animal Science, 95(1): 455-474. doi: 10.2527/jas.2016.0876. 

Jancewicz LJ, Penner GB, Swift ML, McKinnon JJ, Waldner CL, McAllister TA, 2016. Characterization of the variation in the daily excretion of faecal constituents and digestibility predictions in beef cattle fed feedlot diets using near infrared spectroscopy. Canadian Journal of Animal Science, 96(4): 532-549. doi: 10.1139/CJAS-2015-0193.

Buchanan, C., Van Kessel, A.G., Waldner, C., Christensen, D.A., Laarveld, B. and Schmutz, S.M., 2003. Evidence of a Leptin Genotype Advantage in Dairy Production, Canadian Journal of Animal Science, 83: 619 (abstract).

Buchanan, F.C., Van Kessel, A.G., Waldner, C.L., Christensen, D.A., Laarveld, B. and Schmutz, S.,  2003. An Association Between a Leptin Single Nucleotide Polymorphism and Milk and Protein Yield. Journal of Dairy Science, 86: 3164-3166.

Research Tools and Methodologies

Waldner, C.L., 2008. Western Canada study of animal health effects associated with exposure to emissions from oil and natural gas field facilities. Study design and data collection I. Herd performance records and management. Archives of Environmental and Occupational Health, 63, 167-186.

Waldner, C., 2001. Monitoring Beef Cattle Productivity as a Measure of Environmental Health. Environmental Research Section A, 86, 94-106.

** These are selected examples of design focused papers.  There are many other examples of papers reporting surveillance design in the context of specific diseases or animal health issues.

Waldner, C.L., Campbell, J.R., 2015. Herd Health Investigations in Cattle Practice.  In Cockcroft, P. (ed.) Bovine Medicine, 3rd edition. John Wiley and Sons, Ltd., Oxford UK, pp. 117-123, doi: 10.1002/9781118948538.ch13

Waldner, C.L., Hendrick, S., Chaban, B., Garcia Guerra, A., Griffin, G., Campbell, J., Hill, J.E., 2013. Application of a new diagnostic approach to a Bovine Genital Campylobacteriosis outbreak in a Saskatchewan beef herd. Canadian Veterinary Journal, 54: 373-376.

Waldner, C.L., and Campbell, J.R., 2006. Disease Outbreak Investigation in Food Animal Practice, Ruegg, P. (ed.) Barnyard Epidemiology and Performance Assessment Veterinary Clinics of North America: Food Animal Practice, 22:75-102.

Waldner, C.L., 2001. Investigation of Disease Outbreaks and Sub-Optimal Productivity. In Radostits, O.M.(ed.), Herd Health: Food Animal Production Medicine, 3rd edition.

Blakely, B.R., Fraser, L.M., Waldner, C., 2007. Chlorate Poisoning in Beef Cattle. Canadian Veterinary Journal, 48: 1071-1073.

Gow, S., Waldner, C.L. and Ross. C., 2005. The Effect of Duration of Treatment on Weaning Weights in a Cow-calf Herd with a Protracted Severe Neonatal Scours Outbreak, Canadian Veterinary Journal, 16: 418-425.

Waldner, C.L., Checkley, S., Blakley, B., Pollock, C. and Mitchell, B., 2002. Managing Lead Exposure and Toxicity in Cow-Calf Herds Exposed to Discarded Lead Batteries. Journal of Veterinary Diagnostic Investigation, 14: 481-486.

Waldner, C.L., Ribble, C.S. and Janzen, E.D., 1998. Evaluation of the Impact of a Natural Gas Leak From a Pipeline on Productivity of Beef Cattle. Journal of the American Veterinary Medical Association, 212: 41-48.

McLeod L, Bharadwaj L, Epp T, Waldner CL., 2019. Bayesian hierarchical models as tools to evaluate the association between groundwater quality and the occurrence of type 2 diabetes in rural Saskatchewan, Canada. Archives of Environmental Contamination and Toxicology, 76: 375–393. doi: 10.1007/s00244-018-00588-4.

McLeod, L., Bharadwaj, L., Epp, T., Waldner, C.L., 2018. Ecological analysis of associations between groundwater quality and hypertension and cardiovascular disease in rural Saskatchewan, Canada using Bayesian hierarchical models and administrative health data. Environmental Research, 167:329-340. https://doi.org/10.1016/j.envres.2018.07.038 

McLeod, L., Bharadwaj, L., Epp, T., Waldner, C., 2017. Use of principal components analysis and kriging to predict groundwater-sourced rural drinking water quality in Saskatchewan. International Journal of Environmental Research and Public Health, 14:1065. doi:10.3390/ijerph14091065.

Bermedo-Carrasco, S., Waldner, C.,, Peña-Sánchez, J.N., Szafron, M., 2016. Spatial variations in cervical cancer prevention in Colombia: geographical differences and associated socio-demographic factors. Spatial and Spatio-temporal Epidemiology, 19: 78-90. http://dx.doi.org/10.1016/j.sste.2016.07.002.

Epp, T., Argue, C., Waldner, C., Berke, O., 2009. Spatial analysis of Anthrax cases in Saskatchewan, 2006. Canadian Veterinary Journal, 51: 743-748.

Adewusi, O.O., Waldner, C.L., Hanington, P.C., Hill, J.E., Freeman, C.N., Otto, S.J.G. 2023. Laboratory tools for the direct detection of bacterial respiratory infections and antimicrobial resistance: a scoping review. Journal of Veterinary Diagnostic Investigation. https://doi.org/10.1177/10406387241235968.

Strong, K.M., Marasco, K.L., Invik, J., Ganshorn, H., Reid-Smith, R.J., Waldner, C.L.,  Otto, S.J.G., Kastelic, J.P., Checkley, S.L., 2023. Factors associated with antimicrobial resistant enterococci in Canadian beef cattle: A scoping review. Frontiers in Veterinary Science, 10:1155772. https://doi.org/10.3389/fvets.2023.1155772

Ramsay, D.E., Invik, J., Checkley, S.L., Gow, S., Osgood, N.D., Waldner, C.L., 2018. Application of dynamic modeling techniques to the problem of antibacterial use and resistance: a scoping review. Epidemiology and Infection, 146(16): 2014-2027. doi.org/10.1017/S0950268818002091.

Nekouei, O., Checkley, S., Waldner, C., Smith, B., Invik, J., Carson, C., Avery, B., Sanchez, J., Gow, S., 2018. Exposure to antimicrobial-resistant Escherichia coli through the consumption of ground beef in Western Canada. International Journal of Food Microbiology,  272:41-48. https://doi.org/10.1016/j.ijfoodmicro.2018.02.022.

Rafferty, E.R.S., Gagnon, H.L., Farag, M., Waldner, C.L., 2017. Economic evaluations of vaccines in Canada: A scoping review. Cost Effectiveness and Resource Allocation, 15:7. DOI 10.1186/s12962-017-0069-4. April 2017.

Uehlinger, F.D., Johnston, A.C., Bollinger, T.K.; Waldner, C.L., 2016. Systematic review of management strategies to control chronic wasting disease in wild deer populations in North America. BMC Veterinary Research, 12: 173. doi: 10.1186/s12917-016-0804-7.

Bradford, L., Bharadwaj, L., Okpalauwaekwe, U., Waldner, C.,  2016. Drinking Water Quality in Indigenous Communities in Canada And Health Outcomes: A Scoping Review. International Journal of Circumpolar Health, 75: 32336. http://dx.doi.org/10.3402/ijch.v75.32336. 

Wilkins, W., Rajic, A., Parker, S., Waddell, L., Sanchez, J., Sargeant, J., Waldner, C., 2010. Examining heterogeneity in the diagnostic accuracy of culture and PCR for Salmonella spp. in swine: A systematic review / meta-regression approach.  Zoonoses Public Health 57 Suppl, 1: 121-134.

Sargeant, J.M., O'Connor, A.M., Dohoo, I.R., Erb, H.N., Ersboll, A.K., Martin, S.W., Nielsen, L.R., Pearl, D.L., Pfeiffer, D.U., Sanchez, J., Torrence, M.E., Vigre, H. , Waldner, C., Ward, M.P. 2016. Methods and processes of developing the Strengthening the Reporting of Observational Studies in Epidemiology – Veterinary (STROBE-Vet) statement. Journal of Veterinary Internal Medicine, 30(6):1887-1895. doi: 10.1111/jvim.14574. Epub 2016 Nov 7.

Sargeant, J.M., O'Connor, A.M., Dohoo, I.R., Erb, H.N., Ersboll, A.K., Martin, S.W., Nielsen, L.R., Pearl, D.L., Pfeiffer, D.U., Sanchez, J., Torrence, M.E., Vigre, H. , Waldner, C., Ward, M.P. 2016. Explanation and Elaboration Document for the STROBE-Vet statement: Strengthening the Reporting of Observational Studies in Epidemiology – Veterinary extension. Journal of Veterinary Internal Medicine, 30(6):1896-1928. doi: 10.1111/jvim.14592. Epub 2016 Nov 7.

Erickson, N.E.N., Lanigan, E., Waugh, T., Gesy, K., Waldner, C. 2017. Evaluation of long-acting oxytetracycline and a commercial monovalent vaccine for the control of Campylobacter fetus subsp. venerealis infection in beef bulls. Canadian Veterinary Journal, 58(10):1051-1058.

García-Guerra, A., Waldner, C.L.**, Pellegrino, A., Macdonald, N., Chaban, B., Hill, J.E., Hendrick, S.H., 2016. Effect of sample pooling and transport conditions on the clinical sensitivity of a real-time polymerase chain reaction assay for Campylobacter fetus subsp. venerealis in preputial samples from bulls. Canadian Journal of Veterinary Research, 80(1): 32-39. 

Garcia Guerra, A., Chaban, B., Hill, J.E., Waldner, C., Hendrick, S., 2014. Clinical sensitivity and specificity of a real time PCR assay for bovine genital campylobacteriosis in direct preputial samples. American Journal of Veterinary Research, 75(6): 851-860. doi: 10.2460/ajvr.75.9.851.

Ellis, J., Waldner, C., Gow, S., Jackson, M. 2013. Relationship between pulmonary lesions and arterial pO2 and lactate concentrations in calves experimentally infected with bovine respiratory syncytial virus. Canadian Journal of Veterinary Research, 77: 205-210.

Gow, S., Waldner, C.L. and Ross. C., 2005. The Effect of Duration of Treatment on Weaning Weights in a Cow-calf Herd with a Protracted Severe Neonatal Scours Outbreak, Canadian Veterinary Journal, 16: 418-425.

Jelinski, M., Bergen, R., Grant, B., Waldner, C., 2019. Adoption of technology and management practices by Canadian cow-calf producers. Canadian Veterinary Journal, 60(3): 287-293.

Jelinski, M., Waldner, C.L., 2018. Changing demographics of the Canadian cow-calf industry for the period 2011 to 2016. Canadian Veterinary Journal, 59(9): 1001.

McLeod, L., Bharadwaj, L., Waldner, C., 2015. Risk Factors Associated with Perceptions of Drinking Water Quality in Rural Saskatchewan.  Canadian Water Resources Journal, 40(1): 36-48, http://dx.doi.org/10.1080/07011784.2014.985513.

Jelinski, M., Campbell, J., Hendrick, S., Waldner, C., 2015. Survey of Saskatchewan beef cattle producers regarding management practices and veterinary service usage. Canadian Veterinary Journal,  56 (1): 66-72.

McLeod, L., Bharadwaj, L., Waldner, C., 2014. Risk Factors Associated with the Choice to Drink Bottled Water and Tap Water in Rural Saskatchewan International Journal of Environmental Research and Public Health, 11(2): 1626-1646. doi:10.3390/ijerph110201626.

Waldner, C., Jelinski, M., McIntyre-Zimmer, K., 2013. Survey of western Canadian beef producers regarding calfhood diseases, management practices, and veterinary service usage. Canadian Veterinary Journal, 54: 559-564.

Epp, T. Y., Waldner, C.L., 2012. Occupational Health Hazards in Veterinary Medicine: Zoonoses and other Biological Hazards. Canadian Veterinary Journal, 53: 144-150.

Epp, T. Y., Waldner, C.L., 2012. Occupational Health Hazards Veterinary Medicine: Physical, Psychological and Chemical Hazards. Canadian Veterinary Journal, 53: 151-157.

Sebastian, T., Watts, J.M., Stookey, J., Buchanan, F., Waldner, C.L., 2011. Temperment in beef cattle: Methods of measurement and their relationship to production. Canadian Journal of Animal Science, 91: 557-565.

McDonald G.W., Bradford L., Neapetung M., Osgood N.D., Strickert G., Waldner C.L., Belcher K., McLeod L., Bharadwaj L. 2022. Case Study of Collaborative Modeling in an Indigenous Community. Water, 14(17):2601. https://doi.org/10.3390/w14172601

Bradford, L., Waldner, C., McLaughlin, K., Zagozewski, R., Bharadwaj, L., 2018. A Mixed Method Examination of Risk Factors in the Truck-to-Cistern Drinking Water System on the Beardy’s and Okemasis First Nation Reserve, Saskatchewan. Canadian Water Resources Journal, 43:4, 383-400. https://doi.org/10.1080/07011784.2018.1474139

Bermedo-Carrasco, S., Bharadwaj, L., Waldner, C.L., 2018. Factors associated with drinking and being satisfied with tap water in Indigenous communities in Saskatchewan, Canada. International Journal of Circumpolar Health, 77:1. https://doi.org/10.1080/22423982.2018.1466605

Waldner, C.L., Alimezelli, H.T., McLeod, L., Zagozewski, R., Bradford, L.E.A., Bharadwaj, L.A., 2016. Self-Reported Effects of Water on Health in First Nation Communities in Saskatchewan, Canada: Results from Community-Based Participatory Research. Environmental Health Insights, 11:1178630217690193. https://doi.org/10.1177/1178630217690193

System Science Tools

Johnson, P., McLeod, L., Qin, Y., Osgood, N., Rosengren, L., Campbell, J., Larson, K., and Waldner, C., 2022. Investigating effective testing strategies for the control of Johne’s disease in western Canadian cow-calf herds using an agent-based simulation model. Frontiers in Veterinary Science, 9:100314. https://doi.org/10.3389/fvets.2022.1003143.

McDonald G.W., Bradford L., Neapetung M., Osgood N.D., Strickert G., Waldner C.L., Belcher K., McLeod L., Bharadwaj L. 2022. Case Study of Collaborative Modeling in an Indigenous Community. Water, 14(17):2601. https://doi.org/10.3390/w14172601

Ramsay, D.E., Invik, J., Checkley, S.L., Gow, S., Osgood, N.D., Waldner, C.L., 2018. Application of dynamic modeling techniques to the problem of antibacterial use and resistance: a scoping review. Epidemiology and Infection, 146(16): 2014-2027. doi.org/10.1017/S0950268818002091

Safarishahrbijari, A., Teyhouee, A., Waldner, C., Liu, J., Osgood, N.D., 2017. Predictive accuracy of particle filtering in dynamic models supporting outbreak projections. BMC Infectious Diseases, 17:648. https://doi.org/10.1186/s12879-017-2726-9.

Trecker, M., Hogan, D.,Waldner, C., Dillon, J., Osgood, N. 2015. Revised simulation model does not predict rebound in gonorrhea prevalence where core groups are treated in the presence of antibiotic resistance. Sexually Transmitted Infections, http://dx.doi.org/10.1136/sextrans-2014-051792.

Nekouei, O., Checkley, S., Waldner, C., Smith, B., Invik, J., Carson, C., Avery, B., Sanchez, J., Gow, S., 2018. Exposure to antimicrobial-resistant Escherichia coli through the consumption of ground beef in Western Canada. International Journal of Food Microbiology,  272:41-48. https://doi.org/10.1016/j.ijfoodmicro.2018.02.022

Caffrey, N., Invik, J., Waldner, C.L., Ramsay, D., Checkley, S.L., 2018. Risk assessments evaluating foodborne antimicrobial resistance in humans: a scoping review. Microbial Risk Analysis, 11: 31-46.

Ford, L., Bharadwaj, L., McLeod, L., Waldner, C., 2017, Human Health Risk Assessment Applied to Unregulated Drinking Water Sources: A Scoping Review. International Journal of Environmental Research and Public Health, 14(8):846, doi: 10.3390/ijerph14080846.

Trecker, M.A.*, Dillon, J.R., Lloyd, K., Hennick, M., Jolly, A., Waldner, C., 2017. Can social network analysis help address the high rates of bacterial sexually transmitted infections in Saskatchewan? Sexually Transmitted Diseases, 44(6):338-343. doi: 10.1097/OLQ.0000000000000599.

Development and Validation of Diagnostic Techniques

Johnson P, McLeod L, Campbell J, Rousseau M, Larson K, Waldner C., 2022. Estimating the sensitivity and specificity of serum ELISA and pooled and individual fecal PCR for detecting Mycobacterium avium subspecies paratuberculosis in Canadian cow-calf herds using Bayesian latent class models. Frontiers in Veterinary Science, 9:937141.

García-Guerra, A., Waldner, C.L., Pellegrino, A., Macdonald, N., Chaban, B., Hill, J.E., Hendrick, S.H., 2016. Effect of sample pooling and transport conditions on the clinical sensitivity of a real-time polymerase chain reaction assay for Campylobacter fetus subsp. venerealis in preputial samples from bulls. Canadian Journal of Veterinary Research. 80(1): 32-39. 

Waldner, C.L., Parker, S., Gesy, K.M., Waugh, T., Lanigan, E., Campbell, J.R., 2017. Application of direct PCR assays for Campylobacter fetus subsp. venerealis and Tritrichomonas foetus to screen preputial samples from breeding bulls in western Canadian cow-calf herds. Canadian Journal of Veterinary Research, 81(2): 91-99. 

Garcia Guerra, A., Chaban, B., Hill, J.E., Waldner, C., Hendrick, S., 2014. Clinical sensitivity and specificity of a real time PCR assay for bovine genital campylobacteriosis in direct preputial samples. American Journal of Veterinary Research, 75(6): 851-860. doi: 10.2460/ajvr.75.9.851.

Garcia Guerra, A., Hill, J.E., Campbell, J., Waldner, C., Hendrick, S., 2014. Use of pooled protozoal cultures of preputial scraping samples obtained from bulls for the detection of Tritrichomonas foetus by means of a real-time polymerase chain reaction assay. Journal of the American Veterinary Medical Association, 244(3): 352-356. doi: 10.2460/javma.244.3.352.

Garcia Guerra, A., Hill, J.E., Campbell, J., Waldner, C., Hendrick, S., 2013 Sensitivity of a real time polymerase chain reaction for tritrichomonas foetus in direct individual and pooled preputial samples. Theriogenology, 80(9): 1097-1103. doi: 10.1016/j.theriogenology.2013.08.011.

Chaban, B., Garcia Guerra, A., Hendrick, S., Waldner, C., Hill, J.E. 2013. Isolation rates of Campylobacter fetus subsp venerealis from bovine preputial samples via passive filtration on nonselective medium versus selective medium, with and without transport medium. American Journal of Veterinary Research, 74:1066-1069.

Chaban, B., Chu, S., Hendrick, S.,Waldner, C., Hill, J.E. 2012. Evaluation of a Campylobacter fetus subspecies venerealis real-time quantitative PCR for direct analysis of bovine preputial samples. Canadian Journal of Veterinary Research, 76: 166-173.

Barlund, C.S., Carruthers, T.D., Waldner, C.L., Palmer, C.W., 2008. A comparison of diagnostic techniques for postpartum endometritis in dairy cattle. Theriogenology, 69: 714-723.

Waldner,  C.L., Cunningham, G. and Campbell, J.R., 2004. Assessing Agreement Between Three Serological Tests for Neospora Caninum in Beef Cattle, Journal of Veterinary Diagnostic Investigation, 16: 313-315.

Checkley, S.L., Waldner, C.L., Appleyard, G., Campbell, J.R. and Janzen, E.D., 2003. The Comparison of 5 Diagnostic Tests for Diagnosis of Johne’s Disease in Western Canada. Journal of Applied Research in Veterinary Medicine, 1: 196-205.

Waldner, C., Campbell, J., Jim, K.G., Guichon, P.T. and Booker, C.W., 1998. Comparison of 3 methods of selenium assessment in cattle. Canadian Veterinary Journal, 39(4): 225-231.

Calf Health and Performance

Waldner, C., Windeyer, M.C., Rousseau, M., Campbell, J., 2024. The Canadian cow-calf surveillance network – productivity and health summary 2018 to 2022. Frontiers in Veterinary Science, 11:1392166. https://doi.org/10.3389/fvets.2024.1392166

Waldner, C., Wilhelm, B., Windeyer, M.C., Parker, S., Campbell, J. 2022. Improving beef calf health: frequency of disease syndromes, uptake of management practices following calving, and potential for antimicrobial use reduction in western Canadian herds. Translational Animal Science, 6(4):txac151. https://doi.org/10.1093/tas/txac151

Elghafghuf, A., Stryhn, H., Waldner, C., 2014. A cross-classified and multiple membership Cox model applied to calf mortality data. Preventive Veterinary Medicine, 115(1): 29-38. https://dx.doi.org/10.1016/j.prevetmed.2014.03.012 

Waldner, C., 2014. Cow attributes, herd management and environmental factors associated with the risk of calf death at or within one hour of birth and the risk of dystocia in cow-calf herds in Western Canada. Livestock Science, 163:126-139. https://doi.org/10.1016/j.livsci.2014.01.032

Waldner, C., Jelinski, M., McIntyre-Zimmer, K., 2013. Survey of western Canadian beef producers regarding calfhood diseases, management practices, and veterinary service usage. Canadian Veterinary Journal, 54: 559-564.

Waldner, C.L., Kennedy, R.I., Rosengren, L.B., Pollock, C.M., Clark, E.G., 2010. Gross postmortem and histologic examination findings from abortion losses and calf mortalities in western Canadian beef herds. Canadian Veterinary Journal, 51: 1227–1238.

Gow, S.P., Waldner, C.L., 2009. Antimicrobial drug use and reason for treatment in 203 western Canadian cow-calf 2 herds during calving season. Preventive Veterinary Medicine, 90: 55-65.

Gow, S., Waldner, C.L., 2006. An Examination of the Prevalence of and Risk Factors for Shedding of Cryptosporidium spp. and Giardia spp. in Cows and Calves from Western Canadian Cow-calf Herds. Veterinary Parasitology, 137: 50-61.

Gow, S., Waldner, C.L. and Ross. C., 2005. The Effect of Duration of Treatment on Weaning Weights in a Cow-calf Herd with a Protracted Severe Neonatal Scours Outbreak, Canadian Veterinary Journal, 16: 418-425.

 

**See additional papers on calf health and performance in section on “Exposure to the oil and gas industry”

Vaccines and Immune System Function

Lazurko, M., Erickson, N.E.N., Campbell, J.R., Gow,S., Waldner, C.L., 2023. Vaccine use in Canadian cow-calf herds and opportunities for improvement. Frontiers in Veterinary Science, 10:1235942. https://doi.org/10.3389/fvets.2023.1235942

Waldner, C.L., Parker, S., Campbell, J.R., 2019. Vaccine usage in western Canadian cow-calf herds. Canadian Veterinary Journal, 60(4):414-422.

Waldner, C.L., L. Rosengren. 2009. Factors associated with serum immunoglobulin G levels in beef calves from Alberta and Saskatchewan and associations between passive transfer and health outcomes. Canadian Veterinary Journal, 50, 275-283.

Erickson, N., Godson, D., Gow, S., Lacoste, S., Waldner, C., Ellis, J., 2023. Comparative efficacy of modified-live and inactivated vaccines in boosting disease-sparing responses to bovine viral diarrhea virus challenge in neonatally mucosally primed weanling beef calves. The Canadian Veterinary Journal, 64(4): 321-328.

Erickson, N., Waldner, C., April, S., Ellis, J., 2023. Comparison of post-weaning BRD treatment rates between non-vaccinated control and variably primed and boosted beef calves using commercially available bovine coronavirus vaccines. Canadian Veterinary Journal, 65(3):250-258.

Erickson, N., Berenik, A., Lardner, H., Lacoste, S., Campbell, J., Gow, S., Waldner, C., Ellis, J., 2021. Evaluation of bovine respiratory syncytial virus (BRSV) and bovine herpesvirus (BHV) specific antibody responses between heterologous and homologous prime-boost vaccinated western Canadian beef calves. The Canadian Veterinary Journal, 62(1): 37-44.

Erickson, N., Berenik, A., Lardner, H., Lacoste, S., Campbell, J., Gow, S., Waldner, C., Ellis, J., 2019. Comparison of bovine viral diarrhea virus-specific antibody responses of young beef calves vaccinated with either modified live virus or inactivated virus regimens. The Canadian Veterinary Journal, 61(8): 871-874.

Erickson, N., Ellis, J., Waldner, C., Lardner, H., Gow, S., Campbell, J., Berenik, A., 2020. A field comparison of heterologous and homologous routes of administration of modified live vaccines for the control of bovine respiratory disease in recently weaned beef calves. The Canadian Veterinary Journal, 61(5):530-533.

Ellis, J., Gow, S., West, K., Waldner, C., Rhodes, C., Mutwiri, G., Rosenberg, H.F., 2007. Response of young calves to virulent BRSV infection following intranasal administration of parenteral vaccines. Journal of the American Veterinary Medical Association, 230:, 233-243.

Ellis, J., Waldner, C. and Rhodes, C., 2005.  The Longevity of Clinical Immunity to Experimental Bovine Herpesvirus-1 Infection Induced by a Combination Modified-Live / Inactivated Vaccine in Beef Calves, Journal of the American Veterinary Medical Association, 227: 123-128.

Ellis, J., West, K., Waldner, C. and Rhodes, C., 2004.  Efficacy of a Saponin-adjuvanted Inactivated Respiratory Syncytial Virus Vaccine in Calves, Canadian Veterinary Journal, 46: 155-162.

Asiamah, P.A.,  Bechtel,  D.G.,  Waldner,  C., Buchanan, F.C., 2009. Effects of leptin arg25cys on peripheral lymphocyte counts and antibody response to vaccination in beef cattle. Animal Genetics, 40: 783-787.

Waldner, C.L. Clark, E.G., 2009. Association between exposure to emissions from the oil and gas industry and pathology of the immune, nervous, and respiratory systems, and skeletal and cardiac muscle in beef calves. Archives of Environmental and Occupational Health, 64: 6-27.

Bechtel, D.B., Waldner, C.L., Wickstrom, M., 2009. Associations between immune function in yearling beef cattle and airborne polycyclic aromatic hydrocarbons and PM1.0 near oil and natural gas field facilities. Archives of Environmental and Occupational Health, 64: 47-58.

Bechtel, D.B., Waldner, C.L., Wickstrom, M., 2009. Associations between in utero exposure to airborne emissions from oil and gas production and processing facilities and immune system outcomes in neonatal beef calves. Archives of Environmental and Occupational Health, 64: 59-71.

Bechtel, D.B., Waldner, C.L., Wickstrom, M., 2009. Associations between immune function in yearling beef cattle and airborne emissions of SO2, H2S, and VOCs from oil and natural gas facilities. Archives of Environmental and Occupational Health, 64: 73-86.

Culling, Mortality and Pathology

Waldner, C.L., R. I. Kennedy, L. Rosengren, E. G. Clark. 2009. A field study of culling and mortality in adult beef cows from western Canada. Canadian Veterinary Journal, 50: 491-499.

Waldner, C.L., Kennedy, R.I., Rosengren, L.B., Pollock, C.M., Clark, E.G., 2010. Gross postmortem and histologic examination findings from abortion losses and calf mortalities in western Canadian beef herds. Canadian Veterinary Journal, 51: 1227–1238.

Waldner, C.L., Clark, E.G., 2009. Association between exposure to emissions from the oil and gas industry and pathology of the immune, nervous, and respiratory systems, and skeletal and cardiac muscle in beef calves. Archives of Environmental and Occupational Health, 64: 6-27.

Toxicology

Waldner, C.L. Clark, E.G., 2009. Association between exposure to emissions from the oil and gas industry and pathology of the immune, nervous, and respiratory systems, and skeletal and cardiac muscle in beef calves. Archives of Environmental and Occupational Health, 64:, 6-27.

Waldner, C.L., 2009. The risk of abortion and stillbirth in cow-calf herds exposed to the oil and gas industry in Western Canada. Archives of Environmental and Occupational Health, 64: 29-45.

Bechtel, D.B., Waldner, C.L., Wickstrom, M., 2009. Associations between immune function in yearling beef cattle and airborne polycyclic aromatic hydrocarbons and PM1.0 near oil and natural gas field facilities. Archives of Environmental and Occupational Health, 64: 47-58.

Bechtel, D.B., Waldner, C.L., Wickstrom, M., 2009. Associations between in utero exposure to airborne emissions from oil and gas production and processing facilities and immune system outcomes in neonatal beef calves. Archives of Environmental and Occupational Health, 64: 59-71.

Bechtel, D.B., Waldner, C.L., Wickstrom, M., 2009. Associations between immune function in yearling beef cattle and airborne emissions of SO2, H2S, and VOCs from oil and natural gas facilities. Archives of Environmental and Occupational Health, 64: 73-86.

Waldner, C.L., 2008. Western Canada study of animal health effects associated with exposure to emissions from oil and natural gas field facilities. Study design and data collection I. Herd performance records and management. Archives of Environmental and Occupational Health, 63: 167-186.

Waldner, C.L., 2008. Western Canada study of animal health effects associated with exposure to emissions from oil and natural gas field facilities. Study design and data collection II. Location of study herds relative to the oil and gas industry in Western Canada. Archives of Environmental and Occupational Health, 63:187-200.

Waldner, C.L., 2008. Western Canada study of animal health effects associated with exposure to emissions from oil and natural gas field facilities. Study design and data collection III. Methods of assessing animal exposure to contaminants from the oil and gas industry. Archives of Environmental and Occupational Health, 63: 201-219.

Waldner, C.L., 2008. The risk of nonpregnancy, risk of disposal for pregnant cows, and duration of the calving interval in cow-calf herds exposed to the oil and gas industry in Western Canada. Archives of Environmental and Occupational Health, 63: 220-240.

Waldner, C.L., 2008. The association between exposure to the oil and gas industry and beef calf mortality in Western Canada. Archives of Environmental and Occupational Health, 63: 241-261.

Waldner, C.L., Ribble, C.S., Janzen, E.D. and Campbell, J.R., 2001. Associations Between Oil- and Gas-Well Sites, Processing Facilities, Flaring, and Beef-Cattle Reproduction and Calf Mortality in Western Canada. Preventive Veterinary Medicine, 50: 1-17.

Waldner, C.L., Ribble, C.S., Janzen, E.D. and Campbell, J.R., 2001. Associations Between Total Sulfation, Hydrogen Sulfide Deposition, and Beef-Cattle Breeding Outcomes in Western Canada. Preventive Veterinary Medicine, 50: 19-33.

Waldner, C., 2001. Monitoring Beef Cattle Productivity as a Measure of Environmental Health. Environmental Research Section A, 86: 94-106.

Waldner, C.L., Ribble, C.S. and Janzen, E.D., 1998. Evaluation of the Impact of a Natural Gas Leak From a Pipeline on Productivity of Beef Cattle. Journal of the American Veterinary Medical Association, 212: 41-48.

Blakely, B.R., Fraser, L.M., Waldner, C., 2007. Chlorate Poisoning in Beef Cattle. Canadian Veterinary Journal, 48: 1071-1073.

Waldner, C.L., Checkley, S., Blakley, B., Pollock, C. and Mitchell, B., 2002. Managing Lead Exposure and Toxicity in Cow-Calf Herds Exposed to Discarded Lead Batteries. Journal of Veterinary Diagnostic Investigation, 14: 481-486.