Meningitis Case Definitions and Confirmation
|Case Definition/Case Classification
|A syndrome characterized by acute onset of meningeal symptoms (stiff neck, fever, and headache), cerebrospinal fluid pleocytosis (excessive lymphocytes), with no laboratory evidence of bacterial or fungal organisms. Aseptic meningitis is a syndrome of multiple etiologies, but many cases are caused by a viral agent.
Confirmed: A clinically compatible illness diagnosed by a physician as aseptic meningitis, with no laboratory evidence of bacterial or fungal meningitis; or a viral isolate from cerebrospinal fluid; or a viral isolate from blood with a clinically compatible illness diagnosed by a physician
|Bacterial and Other meningitis
|Bacterial meningitis manifests most commonly with fever, headache, and a stiff neck; the disease may progress rapidly to shock and death. However, other manifestations may be observed.
Confirmed: A clinically compatible case that is laboratory confirmed
|Isolation of a bacterial species, fungus, or parasite from the cerebrospinal fluid or a clinically compatible case accompanied by a positive blood culture