
Equine cases of West Nile virus in the U.S. from 2006 to 2019
This statistic shows the number of West Nile virus (WNV) cases in horses from 2006 to 2019. According to the data, there were 1,086 cases of WNV in horses in 2006. That number decreased to 90 cases in 2019. WNV is a mosquito transmitted infection that exists in wild bird populations. It is transmitted to many animals including horses and humans and can cause severe long-lasting neurological complications.