Mosquito season raises the stakes for equine vaccination

As mosquito season ramps up, Texas A&M veterinarians are reminding horse pet parents and equine practitioners that West Nile virus and the equine encephalitides remain a seasonal, potentially fatal threat, especially in warmer parts of the U.S. In an April 23 article, Texas A&M’s Dr. Kallie Hobbs said cases tend to rise in summer, with southern states facing longer periods of risk, and stressed that prevention hinges on vaccination plus mosquito control. Hobbs noted that once neurologic disease progresses, treatment can become both medically difficult and financially heavy, with some down horses costing up to $20,000 to manage. (vetmed.tamu.edu)

Why it matters: For veterinary professionals, the message is less about a new pathogen than a timely seasonal practice reminder: West Nile virus, Eastern and Western equine encephalomyelitis, and in some regions Venezuelan equine encephalitis are mosquito-borne neurologic diseases with serious welfare consequences and limited treatment options. AAEP classifies EEE/WEE and WNV as core equine vaccines, while USDA APHIS says annual vaccination is effective and boosters may be warranted in year-round or higher-risk mosquito areas. That makes spring vaccine compliance, client education, and mosquito-abatement counseling central parts of preventive equine care right now. (aaep.org)

What to watch: As temperatures rise into summer, veterinarians will be watching regional mosquito pressure, vaccine uptake, and any equine case activity reported through USDA APHIS’ Equine Arbovirus Dashboard. (aphis.usda.gov)