Officials Warn of Possible Measles Exposure at St. Louis Airport

More than 900 cases of the virus have been reported across the United States this year, according to the CDC.

A thin-section transmission electron micrograph (TEM) reveals the ultrastructural appearance of a single virus particle, or “virion,” of the measles virus. CDC via Getty Images

People may have been exposed to the measles virus at St. Louis Lambert International Airport earlier this month, Missouri health officials warned.

A person infected with measles flew into St. Louis Lambert International Airport on a domestic flight in February, the Missouri Department of Health and Senior Services said in a release on Feb. 17.