Federal health officials issued an urgent public health alert this week as West Nile virus spreads faster and earlier than it has in more than two decades — with the timing landing just hours before millions of Americans plan to gather outdoors for Fourth of July celebrations.
The Centers for Disease Control and Prevention confirmed at least 48 cases of West Nile virus as of June 30, 2026, with 38 of those classified as severe neuroinvasive disease, meaning the virus reached the brain or spinal cord. Since 2004, the average number of cases reported by the end of June has hovered around 10. This year's count is nearly five times that historical benchmark.
