05/05/2025
Missouri DHSS announces possible measles exposure in St. Louis
JEFFERSON CITY, MO – A confirmed case of measles from an out-of-state resident was reported to have visited the St. Louis Aquarium between 1-6 p.m. on April 30. Additionally, the individual ate at a restaurant in St. Louis on the same day, but available details of this visit have been extremely limited thus far. More details will be provided if they become available.
Because measles is highly contagious, individuals who may have had exposures at the St. Louis Aquarium during the time the person visited and who are unvaccinated or are immunocompromised should consider post-exposure prophylaxis, according to the established public health recommendation to prevent measles infection and its complications. The usual time interval for prophylaxis to be effective is within six days of exposure (by May 6). Those with questions or the need for evaluation should contact their health care provider or local public health agency.
All individuals with possible exposures should watch for the symptoms of measles for 21 days from the date of exposure and report to their local public health agency if symptoms appear. People who think they have measles should isolate themselves and call their health care provider before arriving to be tested. It is important to let the provider know of the concern for measles and to get instructions on how to come to the office for diagnosis without exposing other people to the virus.
