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Colorado State Veterinarian confirms first Equine West Nile Virus case of 2020

Christian Fernsby |
A horse residing in Jefferson County has been diagnosed with West Nile Virus (WNV), marking the first confirmed equine WNV case in 2020.

Topics: COLORADO    EQUINE WEST NILE VIRUS   

Vaccines in horses have proven to be a very effective prevention tool for WNV, and horses that have been vaccinated in past years do need an annual booster. If a horse has not been vaccinated in previous years, it will need the two shot vaccination series within a three to four week period.

In addition to vaccinations, as a preventative measure horse owners should also work diligently to reduce mosquito populations and their possible breeding areas where horses are located. Recommendations include removing stagnant water sources, keeping animals inside during the bugs’ feeding times, which are typically early in the morning and evening, and using mosquito repellents.

Any time a horse displays clinical signs consistent with neurologic disease, a complete veterinary examination is warranted. All infectious or contagious equine neurologic diseases are reportable to the Colorado State Veterinarian's Office.


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