Neospora caninum is the leading cause of bovine fetal loss in British Columbia, Canada

•Neospora caninum is the leading cause of bovine abortion in British Columbia, Canada.•Diagnoses increased more than two fold during active surveillance.•Neospora caninum was diagnosed throughout the study period.•Cases were geographically widespread in British Columbia, Canada. The protozoan pathog...

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Bibliographic Details
Published in:Veterinary parasitology 2016-03, Vol.218, p.46-51
Main Authors: Wilson, Devon J., Orsel, Karin, Waddington, Josh, Rajeev, Malavika, Sweeny, Amy R., Joseph, Tomy, Grigg, Michael E., Raverty, Stephen A.
Format: Article
Language:English
Subjects:
Aborted Fetus - parasitology
Abortion
Abortion, Veterinary - diagnosis
Abortion, Veterinary - epidemiology
Abortion, Veterinary - parasitology
Age Factors
Animals
beef
beef cattle
Bovine neosporosis
Breeding
breeds
British Columbia
British Columbia - epidemiology
Cattle
Cattle Diseases - diagnosis
Cattle Diseases - epidemiology
Cattle Diseases - parasitology
Coccidiosis - diagnosis
Coccidiosis - epidemiology
Coccidiosis - parasitology
Coccidiosis - veterinary
farmers
Female
fetal death
Fetal loss
fetus
geographical distribution
gestational age
Longitudinal Studies
monitoring
Neospora - physiology
Neospora caninum
neosporosis
pathogens
Prevalence
Protozoa
Retrospective Studies
Risk Factors
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Summary:•Neospora caninum is the leading cause of bovine abortion in British Columbia, Canada.•Diagnoses increased more than two fold during active surveillance.•Neospora caninum was diagnosed throughout the study period.•Cases were geographically widespread in British Columbia, Canada. The protozoan pathogen Neospora caninum is recognized as a leading cause of infectious abortions in cattle worldwide. To evaluate the impact of neosporosis on dairy and beef herd production, a retrospective, longitudinal study was performed to identify the impact of neosporosis alongside other causes of fetal abortion in British Columbia, Canada. Retrospective analysis of pathology records of bovine fetal submissions submitted to the Animal Health Centre, Abbotsford, British Columbia, a provincial veterinary diagnostic laboratory, from January 2007 to July 2013 identified 182 abortion cases (passive surveillance). From July 2013 to May 2014, an active surveillance program identified a further 54 abortion cases from dairy farmers in the Upper Fraser Valley, British Columbia. Of the total 236 fetal submissions analyzed, N. caninum was diagnosed in 18.2% of cases, making it the most commonly identified infectious agent associated with fetal loss. During active surveillance, N. caninum was associated with 41% of fetuses submitted compared to 13.3% during passive surveillance (p
ISSN:0304-4017
1873-2550
DOI:10.1016/j.vetpar.2016.01.006