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Mosquitoes can also transmit West Nile virus to people. Most people who contract the virus never develop symptoms. However, a small percentage do have symptoms, and infection is more common in children, the elderly, and immunosuppressed people. West Nile fever in people is a syndrome characterized by fever, headache, and weakness.
The symptoms of severe infection (West Nile encephalitis or meningitis) can include headache, high fever, neck stiffness, muscle weakness, stupor, disorientation, tremors, seizures, paralysis, and coma. WNV can cause serious illness, and in some cases, death. Usually, symptoms occur from 3 to 14 days after being bitten by an infected mosquito.
Jun 29, 2017 · West Nile Virus (WNV) is a virus that infects animals and humans after being bitten by various types of infected mosquitoes. It can be fatal. It can be passed on if a mosquito bites a bird with ...
Apr 11, 2024 · West Nile virus is a mosquito-borne illness that can cause flulike symptoms. Most people recover, but in rare cases a West Nile virus infection can be life-threatening. West Nile virus is found worldwide, including in the U.S., and is most commonly spread by the Culex species of mosquito.
Oct 5, 2022 · The typical incubation period for West Nile is 2-6 days, although it can be as long as 15 days. Most people infected with West Nile virus will be asymptomatic or experience a flu-like illness. 20% of those bitten by an infected mosquito will develop the symptoms of West Nile fever. 1 out of 150 people bitten by an infected mosquito will develop ...
Apr 1, 2009 · Birds with visible symptoms of West Nile virus often die within a few days. Affected birds will often be fluffed out and stay low to the ground, or seem off balance and unable to stand. Because West Nile virus affects birds, public health officials look for cases of sick and dead birds as an early warning that an outbreak may begin.
West Nile Virus. West Nile virus is a flavivirus that is now the primary cause of arbovirus encephalitis in the United States. Most patients have mild or no symptoms. About 1 out of 150 patients develop a severe infection involving the central nervous system. Diagnosis is by serologic testing.
