The CDC has reported instances of West Nile virus in mosquito populations sooner than anticipated in 2026, with infected mosquitoes found in San Antonio, Frisco (Texas), New Orleans, and six counties in California. This early emergence indicates a likely increase in transmission rates for West Nile, which can lead to severe neurological issues in about 1% of those infected. The greatest danger is posed to individuals over 60 years old and those with weakened immune systems. The CDC's health outlook released on June 5, 2026, warns that southern and western regions of the US are at heightened risk during the peak summer months.
