ER Tick-Bite Surge Signals Widening Lyme Disease Threat
CDC data show April 2026 tick-bite ER visits rose to about 71 per 100,000—more than double the historical average of 30—marking the highest seasonal level in years and highest among children under 10 and adults 70–79. The surge coincides with expanding ranges of the blacklegged and lone star ticks, driven by warmer, wetter conditions and deer/mouse hosts, raising risk for Lyme disease and other infections (anaplasmosis, ehrlichiosis, babesiosis, Powassan virus). There are no vaccines for tick-borne diseases in the U.S.; prevention emphasizes repellents, permethrin-treated clothing, tick checks, prompt removal, and showering after outdoors exposure.