The Canadian veterinary journal = La revue veterinaire canadienne · 2022
Surveillance of Babesia odocoilei in wild and farmed cervid populations of Saskatchewan, Canada.
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Burgess Hilary J, Pattullo Kimberly M, Rainbow Crystal A, Zimmer Marnie, Lockerbie Betty P, Bollinger Trent K
Аннотация
OBJECTIVE: To investigate whether Babesia odocoilei could be detected from farmed and wild cervid diagnostic submissions prior to its first reported occurrence in Saskatchewan.
PROCEDURE: Polymerase chain reaction (PCR) for B. odocoilei was used to survey 85 fresh-frozen samples and 112 formalin-fixed, paraffin-embedded samples from Saskatchewan cervids submitted for necropsy between 2000 and 2014.
RESULTS: The PCR was positive for B. odocoilei in 1/84 white-tailed deer, 1/41 moose, 0/37 mule deer, and 1/35 elk. The positive elk was from a farmed herd, but the remaining 2 positive samples were from wild cervids. The positive moose sample was the earliest confirmed infection, dating back to 2008. Therefore, 1.5% of the study population tested positive over the 14-year period.
CONCLUSION: There were low numbers of cervids infected with B. odocoilei in the study population.
CLINICAL RELEVANCE: Babesiosis should be included as a differential diagnosis for disease in susceptible cervids when clinical signs are compatible; however, a lack of suggestive clinical signs or necropsy findings does not preclude infection. Thus, monitoring prevalence of the disease within Saskatchewan (and Canada) will likely require targeted surveillance.
PROCEDURE: Polymerase chain reaction (PCR) for B. odocoilei was used to survey 85 fresh-frozen samples and 112 formalin-fixed, paraffin-embedded samples from Saskatchewan cervids submitted for necropsy between 2000 and 2014.
RESULTS: The PCR was positive for B. odocoilei in 1/84 white-tailed deer, 1/41 moose, 0/37 mule deer, and 1/35 elk. The positive elk was from a farmed herd, but the remaining 2 positive samples were from wild cervids. The positive moose sample was the earliest confirmed infection, dating back to 2008. Therefore, 1.5% of the study population tested positive over the 14-year period.
CONCLUSION: There were low numbers of cervids infected with B. odocoilei in the study population.
CLINICAL RELEVANCE: Babesiosis should be included as a differential diagnosis for disease in susceptible cervids when clinical signs are compatible; however, a lack of suggestive clinical signs or necropsy findings does not preclude infection. Thus, monitoring prevalence of the disease within Saskatchewan (and Canada) will likely require targeted surveillance.