What is the recommended vaccination frequency for West Nile Virus?

The recommended vaccination frequency for West Nile Virus is once after the initial two doses. This vaccination schedule is designed to provide long-term immunity following the primary vaccination series, which typically consists of an initial set of vaccinations given in the first year. After these initial doses, a horse generally requires only a single booster to maintain adequate immunity against the virus.

The vaccine is effective in preventing West Nile Virus, which is crucial given the potential severity of the disease in horses. Regular booster vaccinations help ensure that immunity remains strong, but after the two initial doses, a once-annual booster is often sufficient for continued protection. Thus, the approach of administering just one additional vaccination after the initial series ensures both effectiveness and efficiency in equine health management.