Local transmission of Plasmodium vivax malaria--Houston, Texas, 1994.

Malaria was endemic in the United States until the late 1940s; since then, most cases of malaria reported in the United States has been acquired during international travel or has occurred in persons who had resided in countries where malaria is endemic. This report summarizes the investigation of three persons who acquired Plasmodium vivax infection in Houston, Texas, by presumed mosquitoborne transmission during 1994.