California Group Virus Symptoms
Common symptoms of California group virus include:
A small number of people may develop encephalitis or meningitis.
Symptoms of encephalitis or meningitis include:
- Severe headache
- High fever
- Neck pain and stiffness
- Repeated vomiting
Symptoms of severe encephalitis or meningitis include:
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- Clark GG, Martin RJ, Pretula HL, Langkop CW, Rohrer HH. California group virus infections in Illinois. IMJ Ill Med J. 1980 Feb;157(2):91-6. 
- Fauvel M, Artsob H, Calisher CH, Davignon L, Chagnon A, Skvorc-Ranko R, Belloncik S. California group virus encephalitis in three children from Quebec: clinical and serologic findings. Can Med Assoc J. 1980 Jan 12;122(1):60-2, 64. 
- Moulton DW, Thompson WH. California group virus infections in small, forest-dwelling mammals of Wisconsin. Some ecological considerations. Am J Trop Med Hyg. 1971 May;20(3):474-82.