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Depending on product availability or veterinarian preference, an adult horse might not be vaccinated against the equine influenza virus (EIV) using the same vaccine every time. Does this practice place horses at risk of infection, or would it be more prudent to booster the vaccination weeks later when switching manufacturer products?
“Vaccination plays a very important role in controlling EIV infection a highly infectious disease associated with high morbidity and important economic repercussions,” said Bruno Karam, DVM, from The University of California, Davis, William R. Pritchard Veterinary Medical Teaching Hospital. “As such, vaccinating with different products and, therefore, different strains of the virus might not be conferring full immunity to these horses. This could put patients at risk of EIV infection when an owner believes they have only a low risk.”