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Sask. cow turns up with anaplasmosis: OIE

Canadian Food Inspection Agency officials plan to test a south-central Saskatchewan cattle herd and neighbouring herds for anaplasmosis after one cow turned up positive for the disease.

According to the website of the World Organization for Animal Health (OIE), CFIA confirmed the disease Oct. 10 in a beef cow from an 89-cow herd in the Assiniboia region. The cow was slaughtered Oct. 22 but the source of the reportable disease in this case remains unknown, the OIE said.

The remaining herd will be retested after Nov. 15, 35 days after the first day of nighttime temperatures below 0C, the OIE said, to allow for incubation time and die-off of vectors due to cold weather.

The farm on which the animal was found is in the same area of Saskatchewan that was affected by an anaplasmosis outbreak in 1983, OIE said. Anaplasmosis, or “tick fever,” most severely affects adult cattle with such symptoms as fever, anemia, weakness, respiratory distress and, in some cases, death. Infected dairy cattle show “rapid” declines in milk output.

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