Viruses Causing Acute Encephalitis in North America

Viruses Causing Acute Encephalitis in North America
COMMON	LESS COMMON
Herpesviruses Cytomegalovirus^a Herpes simplex virus 1^b Herpes simplex virus 2 Human herpesvirus 6 Varicella-zoster virus Epstein-Barr virus Arthropod-borne viruses La Crosse virus West Nile virus^c St. Louis encephalitis virus Zika Enteroviruses	Rabies Eastern equine encephalitis virus Powassan virus Cytomegalovirus^a Colorado tick fever virus Mumps

Viruses Causing Acute Encephalitis in North America

COMMON

LESS COMMON

Herpesviruses

Cytomegalovirus^a

Herpes simplex virus 1^b

Herpes simplex virus 2

Human herpesvirus 6

Varicella-zoster virus

Epstein-Barr virus

Arthropod-borne viruses

La Crosse virus

West Nile virus^c

St. Louis encephalitis virus

Zika

Enteroviruses

Rabies

Eastern equine encephalitis virus

Powassan virus

Cytomegalovirus^a

Colorado tick fever virus

Mumps

^a Immunocompromised host.

^b The most common cause of sporadic encephalitis.

^c The most common cause of epidemic encephalitis.