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West Nile fever is an infection by the West Nile virus, which is typically spread by mosquitoes. [1] In about 80% of infections people have few or no symptoms . [ 2 ] About 20% of people develop a fever , headache, vomiting, or a rash. [ 1 ]
West Nile virus (WNV) infection typically manifests with most individuals remaining asymptomatic, while approximately 20-40% of those infected develop symptoms ranging from mild flu-like illness to severe West Nile encephalitis. [9] The incidence of severe neurologic disease is less than 1%. [9]
West Nile fever is an infection by the West Nile virus, which is typically spread by mosquitoes. [53] In about 80% of infections people have few or no symptoms . [ 54 ] About 20% of people develop a fever , headache, vomiting, or a rash. [ 53 ]
Dr. Leana Wen: West Nile virus is the No. 1 cause of mosquito-borne disease in the continental US, according to the US Centers for Disease Control and Prevention. It is most commonly spread ...
"West Nile virus is the leading cause of mosquito-borne disease in the continental United States and cases are seen every year," Dr. Erin Staples, a medical epidemiologist with the CDC’s ...
So far this year, 216 human cases of West Nile have been reported in 33 states, according to the latest data from the Centers for Disease Control and Prevention. The illness caused what’s known ...
The first cases of West Nile disease in the United States occurred in 1999 in New York. In the first three years only a small number of human cases were diagnosed, all in the Eastern or Southern U.S. (149 cases and 19 deaths, 1999–2001). In 2002, the disease exploded to most of the lower 48 states, causing 4,156 diagnosed cases of which 284 died.
U.S. West Nile virus (WNV) neuroinvasive disease incidence as of Sep 4, 2012. The West Nile virus quickly spread across the United States after the first reported cases in Queens, New York, in 1999. The virus is believed to have entered in an infected bird or mosquito, although there is no clear evidence.