Full Breakdown
Possible Measles Exposure Linked to Busch Stadium and Nearby Businesses
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Exposure Timeline and Affected Sites
In mid-September, Missouri health officials identified a series of locations where an individual with measles may have been present. The list includes a section of Busch Stadium where a Cardinals game was held, as well as several St. Louis-area establishments such as a bar, a café, a restaurant, a sandwich shop, a grocery store and a convenience store. Additional venues in the surrounding suburbs—The Cat's Meow, Paddy O’s, Little Ireland, B & H Market, Pacific Brew Haus, Goodcents, and Bud’s Market—were also named. A separate alert was issued for a train station in Sedalia. The department released specific time windows for each site but did not disclose the identity of the infected individual.
Official Health Guidance
The Missouri Department of Health and Senior Services (DHSS) advises anyone who visited any of the listed locations to monitor for fever, cough, runny nose, red eyes and rash for 21 days after the possible exposure. Individuals who develop symptoms are instructed to isolate immediately and contact a health-care provider before seeking in-person care. DHSS also emphasizes that two doses of the measles-mumps-rubella (MMR) vaccine provide roughly 97 % protection against infection.
Transmission Characteristics and Vaccine Efficacy
Measles is highly contagious; the virus can remain airborne for up to two hours after an infected person leaves a space. Symptoms typically appear about one to two weeks after exposure, beginning with fever and respiratory signs followed by a characteristic rash. The 97 % efficacy figure reflects data cited by DHSS for the standard two-dose MMR schedule.
Data Summary
- Exposure window: mid-September (multiple days)
- Locations: Busch Stadium (Section 141) plus eight additional businesses and a train station
- Monitoring period: 21 days (DHSS)
- Vaccine protection: ~97 % with two MMR doses (DHSS)
- Airborne viability: up to two hours (DHSS)
Next Steps for the Community
DHSS will continue to track any reported cases and update the public as information becomes available. Residents who are unvaccinated or uncertain about their immunization status are encouraged to consult health providers about receiving the MMR vaccine. The department plans to issue further advisories if additional exposures are identified.