Most persons infected with West Nile virus do not become ill, according to the health department. Some patients will have mild, flu-like symptoms. Those over age 65 and those suffering from other medical conditions are more likely to have a more serious infection. There is no specific treatment for West Nile virus which can, in rare cases, lead to death. The disease is spread by mosquitoes infected with the West Nile virus.
Mosquitoes pick up the virus after biting infected birds.
According to the Department of Health, there is no evidence that the virus can be spread directly from birds to people or from person to person. Birds, particularly crows, blue jays, owls, vultures and falcons, are very susceptible to West Nile virus. According to the Department of Health, mosquito surveillance is an important means of determining whether and where West Nile virus may become a problem and, if the virus is detected, where and when spraying should be done. Health Department staff will pick up dead birds for testing, and Loudoun County doctors and veterinarians have been asked to consider the possibility of West Nile virus in patients with symptoms consistent with the infection. According to the Department of Health, West Nile virus infection can be prevented by wearing long, loose, light colored clothing, staying indoors during early morning and early evening, and using insect repellent, to avoid mosquitoes.