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2012 Vesicular Stomatitis Situation -- Timeline and Background

As of October 4, 2012, all VSV-affected premises in Colorado have been released from quarantine and no new cases have been identified.

 

On August 1, 2012, the NVSL in Ames, Iowa, confirmed a finding of VSV infection (New Jersey serotype) on an equine premises in Las Animas County, Colorado. One affected horse had clinical signs and a positive VSV titer at the 1:40 dilution on the complement fixation test meeting the case definition for index case in a subsequent state. This is the index case of VSV for Colorado in 2012.

 

On April 30, 2012, the National Veterinary Services Laboratories (NVSL) in Ames, Iowa, confirmed a finding of vesicular stomatitis virus (VSV) infection (New Jersey serotype) on an equine premises in Otero County, New Mexico. The two affected horses had clinical signs and positive VSV serology. One of the two horses had a four-fold increase in virus neutralization (VN) test titer on paired sera collected 7 days apart meeting the requirements for the index case for the nation. Three other horses on the premises show no clinical signs of disease. The premises is currently under State quarantine. This is the index case of VSV for the United States in 2012.

 

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