On August 28, CDC issued a health update to share new information with clinicians, public health authorities, and the public about locally acquired malaria cases identified in the United States. CDC is collaborating with the Maryland Department of Health on the investigation of a single case of locally transmitted P. falciparum malaria identified in the National Capital Region this month. This follows the identification of unrelated episodes of local transmission of malaria— Florida has identified seven cases and Texas has identified one case of locally acquired P. vivax malaria. All patients received treatment and are improving clinically. Surveillance for additional cases of malaria, as well as malaria-related mosquito surveillance and control, will continue in all three states for a period of eight weeks following the most recent case in each state.