Early, Intense West Nile Season May Signal a Severe Year for the Mosquito-Borne Illness, CDC Says

The United States is experiencing an earlier-than-usual start to the West Nile virus season, prompting health officials to warn that 2026 could see a more active year for the mosquito-borne disease. According to the U.S. Centers for Disease Control and Prevention (CDC), early increases in mosquito activity and confirmed infections may indicate a heightened risk of human cases during the summer and early fall.