Viral meningitis

Background

• Meningitis caused by a viral infection

Microbiology

• Enterovirus EV-B species (includes Group B coxsackieviruses and echoviruses) are the most common cause of aseptic meningitis in both children and adults
  • CV-B2 to CV-B5, E-6, E-6, E-9, E-11, E-13, E-16, E-18, E-30, and E-33
• Parechovirus, especially in very young children and immunocompromised hosts
• Herpes simplex virus (especially HSV-2, as primary infection)
• Varicella
• Mumps (encephalitis), measles (acute encephalitis)
• Arboviruses
• Lymphocytic choriomeningitis virus (LCMV)
• Acute HIV
• EBV, influenza, Colorado tick virus, rabies

Clinical Manifestations

• Fever, headache, neck stiffness
• See aseptic meningitis

Differential Diagnosis

• See other causes of aseptic meningitis