Tick-Borne ‘Malaria-Like’ Illness Spreading in U.S.

Babesiosis, a malaria-like disease transmitted by ticks, is expanding beyond its Northeast strongholds into mid-Atlantic states like Delaware and Maryland. Carried by black-legged ticks, the Babesia parasite can cause fever, chills, and fatigue—sometimes severe in older or immunocompromised people. Climate change appears to be extending tick activity, allowing Babesia to thrive in new areas. Researchers urge heightened vigilance for both doctors and the public, as early detection can prevent serious complications.