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Diseases

Genetic and Rare Diseases Information Center (GARD)

La Crosse encephalitis


Other Names for this Disease
  • Californian encephalitis
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Overview

La Crosse (LAC) encephalitis is a mosquito-borne virus that was first described in La Crosse, Wisconsin in 1963. Since then, it has been reported in several Midwestern and Mid-Atlantic states.[1] The LAC virus is one of many mosquito-transmitted viruses that can cause an inflammation of the brain (encephalitis). About 80-100 cases of this condition are reported each year in the United States.[2] Most cases occur in children younger than age 16. While most people who become infected have no symptoms, those who do become ill may have fever, headache, vomiting and lethargy (tiredness). Severe cases develop encephalitis accompanied by seizures. Coma and paralysis occur in some cases.[1][2] There is no specific treatment for LAC encephalitis. Supportive therapy is provided to those who develop severe cases of the disease.[2]
Last updated: 9/11/2015

References

  1. La Crosse Encephalitis. Virginia Department of Health. March 29, 2013; http://www.vdh.virginia.gov/Epidemiology/DEE/Vectorborne/factsheets/lacrosse.htm. Accessed 9/11/2015.
  2. La Crosse Encephalitis. Centers for Disease Control and Prevention (CDC). October 16, 2009; http://www.cdc.gov/lac/gen/qa.html. Accessed 9/11/2015.
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Basic Information

  • You can obtain information on this topic from the Centers for Disease Control and Prevention (CDC). The CDC is recognized as the lead federal agency for developing and applying disease prevention and control, environmental health, and health promotion and education activities designed to improve the health of the people of the United States.

In Depth Information

  • Medscape Reference provides information on this topic. You may need to register to view the medical textbook, but registration is free.
  • Orphanet is a European reference portal for information on rare diseases and orphan drugs. Access to this database is free of charge.
  • PubMed is a searchable database of medical literature and lists journal articles that discuss La Crosse encephalitis. Click on the link to view a sample search on this topic.
Other Names for this Disease
  • Californian encephalitis
See Disclaimer regarding information on this site. Some links on this page may take you to organizations outside of the National Institutes of Health.