Black nile virus

About 1 out of infected people develop a serious, sometimes fatal, illness. You can reduce your risk of WNV by using insect repellent and wearing long-sleeved shirts and long pants to prevent mosquito bites. Skip directly to site content Skip directly to page options Skip directly to A-Z link. West Nile virus.

Section Navigation. Facebook Twitter LinkedIn Syndicate. Minus Related Pages. He was a whip-smart film nut. He loved his work with a passion.

And he was insanely generous of spirit I know his entire family at The Blacklist is devastated by this news. Clark was one of the good ones, and we lost him way too soon. IE 11 is not supported. For an optimal experience visit our site on another browser. You can lower your risk by protecting yourself from mosquitoes by using mosquito repellent and wearing clothing that covers your skin. Common signs and symptoms include:.

This may include inflammation of the brain encephalitis or of the membranes surrounding the brain and spinal cord meningitis. Signs and symptoms of West Nile fever usually last a few days. But signs and symptoms of encephalitis or meningitis can linger for weeks or months. Certain neurological effects, such as muscle weakness, can be permanent. Mild symptoms of West Nile fever usually resolve on their own. Seek medical attention right away if you have signs or symptoms of serious infection, such as severe headaches, a stiff neck, disorientation or confusion.

A serious infection generally needs hospitalization. When a mosquito bites an infected bird, the virus enters the mosquito's bloodstream and eventually moves into its salivary glands. When an infected mosquito bites an animal or a human host , the virus is passed into the host's bloodstream, where it may cause serious illness. West Nile virus generally spreads to humans and animals from bites of infected mosquitoes.

Mosquitoes get infected and carry the virus after biting infected birds. You can't get infected from casual contact with an infected person or animal.

Most West Nile virus infections happen during warm weather, when mosquitoes are active. The incubation period — the period between when you're bitten by an infected mosquito and the appearance of signs and symptoms of the illness — generally ranges from four to 10 days.

It appeared in the United States in the summer of , and since then has been reported in every state — except Hawaii and Alaska — as well as in Canada.