DIAGNOSIS
Incubation period is usually recognised as 1– 5 days with high fever appearing within a day and neurologic signs manifesting themselves at approximately 5 days.
Clinical diagnosis
Although a presumptive diagnosis of “equine encephalomyelitis” can be made when susceptible animals in tropical or subtropical areas display clinical signs of encephalomyelitis where haematophagous insects are active, VEE can only be considered one of various possible causes and final diagnosis will require laboratory confirmation