On Aug. 18, 2023, the Maryland Department of Health has confirmed and reported a positive case of locally acquired malaria in a Maryland resident who lives in the National Capital Region. The individual was hospitalized and is now recovering. They did not travel recently outside of the United States or to other U.S. states with recent locally acquired malaria cases.

Malaria is a mosquito-borne disease caused by a parasite. More than 2,000 cases of malaria are reported annually in the U.S., according to the Centers for Disease Control and Prevention, with most cases occurring in people returning from international travel.