Health Officials Issue Measles Exposure Warnings in St. Louis Area
Health officials are warning of possible measles exposure linked to Busch Stadium and several local St. Louis-area businesses. A third measles case has also been connected to a train that traveled through St. Louis County.

St. Louis, MO, September 23, 2026 — Health officials in the St. Louis area have issued warnings regarding potential measles exposure following the identification of several cases. The alert includes possible links to exposures at Busch Stadium and various local businesses within the St. Louis region.
The public health advisories are a precautionary measure to inform residents who may have been in specific locations during identified risk periods. Measles is a highly contagious respiratory infection that can spread easily through coughing and sneezing. Symptoms typically include fever, cough, runny nose, and a characteristic rash.
In addition to the exposures potentially linked to public venues and businesses, a third confirmed case of measles has been associated with a train journey that passed through St. Louis County. The specific route and dates of travel for this train exposure were not detailed in the initial warnings.
The health department is urging individuals who may have been exposed and are experiencing symptoms to seek medical advice promptly and to isolate themselves to prevent further spread of the virus. Specific details regarding the exact dates, times, and specific businesses involved in the exposure warnings have not been publicly disclosed in full, but officials emphasize the importance of awareness for anyone who visited the mentioned locations.
The contractor’s name or the specific health department issuing the warning was not provided. Information regarding the status of contact tracing efforts or recommended next steps beyond seeking medical advice for symptomatic individuals was also not fully detailed.
Measles can have serious complications, particularly for young children, pregnant women, and individuals with weakened immune systems. Vaccination remains the most effective way to prevent measles infection and its spread.
Officials are expected to provide further updates as more information becomes available and contact tracing efforts continue.
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