which is the most common cause of acute encephalitis in the united states
Encephalitis Viral encephalitis can occur either as a direct effect of an acute infection, or as one of the sequelae of a latent infection. The majority of viral cases of encephalitis have an unknown cause, however the most common identifiable cause of viral encephalitis is from herpes simplex infection.[8] Other causes of acute viral encephalitis are rabies virus, poliovirus, and measles virus.[9]