Texas Department of State Health Services have confirmed a case of human monkeypox in a U.S. resident who recently traveled from Nigeria to the United States. The person is currently hospitalized in Dallas. CDC is working with the airline and state and local health officials to contact airline passengers and others who may have been in contact with the patient during two flights: Lagos, Nigeria, to Atlanta on July 8, with arrival on July 9; and Atlanta to Dallas on July 9. Travelers on these flights were required to wear masks as well as in the U.S. airports due to the ongoing