Equine Influenza — United States
Equine influenza virus (EIV) is one of the leading respiratory diseases in the United States and, in recent years, the number of infected horses has been on the rise.
Since 2008, Merck Animal Health has collected more than 4700 samples from horses presenting with signs of acute infectious upper respiratory disease and/or acute neurologic disease as part of an ongoing research program. The 2 leading diagnoses, based on samples submitted from horses of all disciplines and ages across the
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