West Nile Encephalitis

National Organization for Rare Disorders, Inc.

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It is possible that the main title of the report West Nile Encephalitis is not the name you expected. Please check the synonyms listing to find the alternate name(s) and disorder subdivision(s) covered by this report.


  • Eastern equine encephalitis
  • EEE
  • Japanese encephalitis
  • Kunjin fever
  • Venezuelan encephalitis
  • Viral encephalitis
  • WEE
  • Western equine encephalitis
  • West Nile Fever
  • West Nile virus
  • WNE

Disorder Subdivisions

  • None

General Discussion

There are seventeen species of birds that are the known carriers of and transmit West Nile Encephalitis (WNE) to humans via the Culex, Aedes, and Anopheles mosquitoes. WNE first causes symptomatic or asymptomatic illness in wild migratory birds that act as viral replication factories. Wild birds infected with WNE contain high titers of the virus and remain viremic for 1-2 weeks, making them ideal hosts to perpetuate the disease. Mosquitoes transmit WNE from birds to humans. Horses, dogs, and other small animals may harbor WNE after being bitten; however, they are inefficient transmitters because viral titers are relatively low, and WNE viremia is short-lived in these animals.

Supporting Organizations

Centers for Disease Control and Prevention

1600 Clifton Road NE
Atlanta, GA 30333
Tel: (404)639-3534
Tel: (800)232-4636
Email: cdcinfo@cdc.gov
Website: http://www.cdc.gov/

Encephalitis Global

18 North Broadway #404
Tarrytown, NY 10591
Tel: 604-980-2236
Fax: (604)904-0809
Email: admin@encephalitisglobal.org
Website: http://www.encephalitisglobal.org

Encephalitis Society

32 Castlegate
North Yorkshire, YO17 7DT
United Kingdom
Tel: 4401653692583
Website: http://www.encephalitis.info

Genetic and Rare Diseases (GARD) Information Center

PO Box 8126
Gaithersburg, MD 20898-8126
Tel: (301)251-4925
Fax: (301)251-4911
Tel: (888)205-2311
Website: http://rarediseases.info.nih.gov/GARD/

NIH/National Institute of Allergy and Infectious Diseases

NIAID Office of Communications and Government Relations
5601 Fishers Lane, MSC 9806
Bethesda, MD 20892-9806
Tel: (301)496-5717
Fax: (301)402-3573
Tel: (866)284-4107
Email: ocpostoffice@niaid.nih.gov
Website: http://www.niaid.nih.gov/

NIH/National Institute of Neurological Disorders and Stroke

P.O. Box 5801
Bethesda, MD 20824
Tel: (301)496-5751
Fax: (301)402-2186
Tel: (800)352-9424
Website: http://www.ninds.nih.gov/

Transverse Myelitis Association

1787 Sutter Parkway
Powell, OH 43065-8806
Tel: (614)766-1806
Email: info@myelitis.org
Website: http://www.myelitis.org

For a Complete Report

This is an abstract of a report from the National Organization for Rare Disorders (NORD). A copy of the complete report can be downloaded free from the NORD website for registered users. The complete report contains additional information including symptoms, causes, affected population, related disorders, standard and investigational therapies (if available), and references from medical literature. For a full-text version of this topic, go to www.rarediseases.org and click on Rare Disease Database under "Rare Disease Information".

The information provided in this report is not intended for diagnostic purposes. It is provided for informational purposes only. NORD recommends that affected individuals seek the advice or counsel of their own personal physicians.

It is possible that the title of this topic is not the name you selected. Please check the Synonyms listing to find the alternate name(s) and Disorder Subdivision(s) covered by this report

This disease entry is based upon medical information available through the date at the end of the topic. Since NORD's resources are limited, it is not possible to keep every entry in the Rare Disease Database completely current and accurate. Please check with the agencies listed in the Resources section for the most current information about this disorder.

For additional information and assistance about rare disorders, please contact the National Organization for Rare Disorders at P.O. Box 1968, Danbury, CT 06813-1968; phone (203) 744-0100; web site www.rarediseases.org or email orphan@rarediseases.org

Last Updated:  1/6/1970
Copyright  2008 National Organization for Rare Disorders, Inc.