Which form of equine encephalomyelitis occurs most frequently?

Eastern equine encephalomyelitis (EEE) occurs most frequently compared to the other types listed. This viral disease is transmitted primarily by mosquitoes and is known to have a high mortality rate in horses. The Eastern form is particularly notable for its prevalence in specific regions where mosquito populations are abundant, and it tends to have outbreaks in the summer and early fall months.

While Western equine encephalomyelitis and Venezuelan equine encephalomyelitis also pose significant risks, EEE cases are reported more consistently, making it the more common form of this disease. The distinction between the various forms is crucial for understanding disease control measures, public health implications, and vaccination strategies within equine populations.