West Nile Virus Resources

What to know

To prevent West Nile virus infections, it is important to conduct surveillance and understand where and how much West Nile virus (WNV) activity is occurring in the United States. Below are several links to WNV Surveillance Guidelines and several reports describing WNV human activity in the United States.

Female doctor looking at a tablet.
Content Source
National Center for Emerging and Zoonotic Infectious Diseases (NCEZID)
About This Page
Published: May 15, 2024
Updated: August 24, 2026

This page was last updated on this date. Updates may include minor edits, image changes, or other modifications to page content.

Reviewed: August 24, 2026

The information on this page was last reviewed by subject matter experts to ensure accuracy.