A syndrome characterized by acute onset of meningeal symptoms, fever, and cerebrospinal fluid pleocytosis, with bacteriologically sterile cultures. (See Encephalitis, arboviral.)
No evidence of bacterial or fungal meningitis
A clinically compatible illness diagnosed by a physician as aseptic meningitis, with no laboratory evidence of bacterial or fungal meningitis
Aseptic meningitis is a syndrome of multiple etiologies, but many cases are caused by a viral agent. The 1990 case definition appearing on this page was re-published in the 1997 MMWR Recommendations and Reports titled Case Definitions for Infectious Conditions Under Public Health Surveillance.1 Thus, the 1990 and 1997 versions of the case definition are identical.