West Nile Virus Vaccine: Adverse Effects in Mares?

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Allegations that the West Nile virus vaccine might have caused abortions and deformed foals were made in a May 30 Denver Post article. Mare owners calling themselves the “Lost Foals Group” claim the vaccine has caused up to 1,200 abortions and nearly 300 deformed or dummy foals. However, top veterinarians dispute those allegations based on their experiences.

Tom Riddle,

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