As IgM does not cross the blood-brain barrier, IgM antibody in CSF strongly suggests central nervous system infection. Polymerase chain reaction (PCR) can also be performed on the CSF.

Nat Clin Pract Neurol. 2006;2(5):264-275. RT-PCR of serum or CSF is not generally useful or indeed recommended for the diagnosis of WNV infection, as peak viremia occurs 3-4 days before symptom ...

The Wisconsin Department of Health Services (DHS) has reported that as of June 2025, there are three reported cases of ...

The sample was taken on June 13. So far, there are no cases in humans. While this is early to detect West Nile virus, experts cautioned that this does not necessarily foretell a bad mosquito season.

SHREWSBURY, Mass. — West Nile virus has been detected in mosquitoes in Massachusetts for the first time this year, the Massachusetts Department of Public Health announced Tuesday.

In 2024, Louisiana recorded 617 positive mosquito pools, including four in New Orleans. Statewide, three people died of the virus last year. West Nile virus can cause mild to severe illness.

While the risk of a healthy person getting West Nile from a mosquito bite is very low, the health department urges people to take precautions during peak mosquito biting times between dusk and dawn.

As of June 18, there have been no reported human West Nile infection cases or deaths in Lubbock in 2025. Mateo Rosiles is the Government & Public Policy reporter for the Lubbock Avalanche-Journal.

Massachusetts logged 19 human West Nile cases last year, with the virus typically caused by bites from infected mosquitos. There were also four human cases of Eastern equine encephalitis, which has ...

West Nile virus is spread to people from infected mosquitoes, most commonly in the summer. Eight out of 10 people infected do not develop symptoms, according to the CDC.

What is West Nile Virus West Nile virus (WNV) is spread by mosquitoes and can cause illness in people and animals. While 80% of human cases are asymptomatic, many people can develop West Nile fever.

West Nile virus (WNV) is spread by mosquitoes and can cause illness in people and animals. While 80% of human cases are asymptomatic, many people can develop West Nile fever.