ST. LOUIS—Late Friday afternoon, the Missouri Department of Health and Senior Services, and the health departments in St. Louis and St. Charles County announced that the agencies had been notified of what was described as an “internationally-imported confirmed” case of measles, and are urging the public to be aware of symptoms.

The state health department said three specific locations have been identified as potential points of exposure to the public and that they are working to notify people who may have been exposed at the following locations.

GYM: Fitness Edge (10571 Old Olive Street Rd, Creve Coeur, MO 63141)

07/21: Possible exposure risk from 6:30 a.m.-2 p.m.

07/24: Possible exposure risk from 6:30 a.m.-7:30 p.m.

07/25: Possible exposure risk from 6:30 a.m.-3:30 p.m.

URGENT CARE: Total Access Urgent Care (2138 1st Capitol Dr., St Charles, MO 63301)

07/25: Possible exposure risk from 5-9 p.m.

HOSPITAL: Emergency Department at the Barnes-Jewish Hospital St. Peters (10 Hospital Dr., St Peters, MO 63376)

07/25: Possible exposure risk from 8:30-10:30 p.m.

Measles is described by health officials as “ a highly-contagious, acute viral illness that is transmitted by contact with an infected person through coughing and sneezing.” Typical symptoms include a high fever, cough, runny nose and red, watery eyes. Measles is also characterized by a red rash that appears several days after symptoms first present themselves. The rash can appear up to 21 days after exposure, usually starting on the hairline of the face and spreading down.

Patients should be considered contagious from four days before until four days after a rash appears, officials said. Anyone exposed to measles and is symptomatic should call a health care facility first before going, the state health department said in a news release.

Healthcare providers are urged to have patients isolate and to contact St. Louis County’s Health Department or the St. Charles County Health Department.

Authorities say they are still waiting on tests to determine the specific strain of the disease.