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Horses once the litmus test for approaching West Nile virus
Posted on August 20, 2012 at 5:44 PM
Updated Monday, Aug 20 at 6:39 PM
West Nile virus appears in horses before it begins showing up in humans. So the animals used to be a good indicator if the deadly virus was in the area. Not so much anymore since they started vaccinating horses. Yet 14 cases have been reported.
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