Stephen J. Schueler, M.D.

Overview Risk Factors Symptoms Evaluation Treatment questions for doctor specialist Home Care fever in adults fever in children warning signs Prevention Underlying Cause Transmission

California Group Virus Overview

What is California Group virus?
California encephalitis is caused by a group of viruses called the California group virus. These viruses are transmitted to humans by mosquitoes. California Group virus usually cause flu-like symptoms. In rare cases, they may cause encephalitis, meningitis or hemorrhagic fever.

What are the symptoms of California Group virus?
Common symptoms of California Group virus include fever, chills, headache, body aches, lymph gland swelling, rash, nausea, and vomiting. Some may develop symptoms of meningitis.

How does the doctor treat California Group virus?
Treatment for California Group virus is supportive and includes acetaminophen or a nonsteroidal anti-inflammatory medication for pain and fever control. Decongestants and medications to control nausea may be helpful.

Continue to California Group Virus Risk Factors

Last Updated: Feb 7, 2010 References
Authors: Stephen J. Schueler, MD; John H. Beckett, MD; D. Scott Gettings, MD
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PubMed California Group Virus References
  1. 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. [610158]
  2. 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. [7363197]
  3. 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. [4397320]
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