Malignant Catarrhal Fever Outbreak

Ovine herpesvirus 2 cause of malignant catarrhal fever outbreak in bison feedlot

Published in TB and Outbreaks Week, March 28th, 2006

Ovine herpesvirus 2 was the cause of a malignant catarrhal fever outbreak in bison feedlot.

"In early 2003, an outbreak of malignant catarrhal fever (MCF) occurred in a bison feedlot in southern Idaho. The outbreak resulted in a 51.2% (n=825) mortality rate among bison which had been exposed to sheep for 19 days," researchers in the United States report.

According to the authors, "Diagnosis was made by detection of ovine herpesvirus 2 (sheep-associated MCF virus) DNA in tissues, or peripheral blood by polymerase chain reaction (PCR), and by histological examination of tissue lesions."

"Peak losses occurred between 41 and 55 days...

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Source: TB and Outbreaks Week (2006-03-28)

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