California encephalitis in the United States
Recent reports of La Crosse encephalitis in North Carolina remind us that a number of severe arthropod-borne infections continue to appear each year in the United States. For almost four decades, California encephalitis has been the most commonly-reported disease in this group 
; however, since 2000, more cases of neuroinvasive West Nile fever have been reported than all other viral encephalitides combined. 
