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Cases of West Nile have been reported in states across the continental United States. West Nile virus activity typically occurs during the summer months and into the fall. The annual number of reported West Nile cases can fluctuate widely, as a result of periodic epidemics.
View the data for West Nile. Data are current as of November 5, 2024. *Total human disease cases includes neuroinvasive and non-neuroinvasive disease cases.
WHO fact sheet on West Nile virus: includes key facts, definition, outbreaks, transmission, diagnosis, treatment, prevention, WHO response.
Weekly updates with the latest reports on West Nile virus cases in Europe updated every Friday, during the transmission season.
The map below shows states with reported cases of West Nile virus in 2024. As with the EEE map, there may be some delays before the latest cases are added, with the CDC updating every one to...
The following maps show the progress of human cases of West Nile across the United States. States are colored according to the percentage of all U.S. West Nile cases they represented in that year.
At least 18 states have detected West Nile virus in mosquitoes or humans as of mid-July, according to the Centers for Disease Control and Prevention.
Explore the West Nile Virus surveillance map data in the state of Texas. View counties impacted by West Nile Virus or review maps from past years.
Arthropod-borne viruses (arboviruses) are transmitted to humans primarily through the bites of infected mosquitoes and ticks. West Nile virus (WNV) is the leading cause of domestically acquired arboviral disease in the United States ().Other arboviruses, including La Crosse, Jamestown Canyon, Powassan, eastern equine encephalitis, and St. Louis encephalitis viruses, cause sporadic disease and ...
Key points. ArboNET is a national arboviral surveillance system managed by CDC and state health departments. The visuals on this dashboard display West Nile virus data from 1999 – 2023. View the historic data. Notice. The 2023 data are preliminary and subject to change. Data are current as of June 18, 2024. Cumulative data for 1999-2023.