West Nile Virus
West Nile virus is a mosquito-borne infection that can cause serious illness, and in some cases, death. West Nile virus was first found in New York State in 1999. Since 2000 there have been over 193 human cases of WNV statewide. Please refer to the West Nile Virus Update for the most recent information.
The chances of a person becoming ill with WNV are small. Most people who are infected with the West Nile virus will not have any type of illness. It is estimated that 20% of the people who become infected will develop West Nile fever: mild symptoms, including fever, headache, and body aches, occasionally with a skin rash and swollen lymph glands. In many individuals, these symptoms are so mild that they go unnoticed or undetected.
The symptoms of severe infection (West Nile encephalitis or meningitis) can include headache, high fever, neck stiffness, muscle weakness, stupor, disorientation, tremors, convulsions, paralysis, and coma. It is estimated that one in 150 persons infected with the West Nile virus will develop the more severe form of the disease. Prevention of mosquito-bites is the most important way to reduce your risk of mosquito-borne diseases such as WNV.
To help protect yourself from mosquitoes and West Nile Virus, wear long sleeves, pants and socks. Consider using insect repellent on exposed skin, and follow label directions. Repellents can be effective at reducing bites from insects that can transmit disease. But their use is not without risk of health effects, especially if repellents are applied in large amounts or improperly. Information in the fact sheets will help you decide when and if a repellent is right for you.
More Information on West Nile Virus
If you have additional questions, contact your local health department. You can also direct questions about mosquitoes, West Nile Virus or encephalitis to the State Health Department at arbobml@health.state.ny.us and questions about insect repellents to the Environmental Health Infoline at 1-800-458-1158.
