ST. LOUIS, Mo. (KFVS) – State health departments in Missouri and Illinois are warning of possible exposures to measles in the St. Louis area.
According to the Missouri Department of Health and Senior Services, a confirmed case of measles from an out-of-state resident was reported to have traveled through St. Louis Lambert International Airport following a domestic flight between 5-7 p.m. on February 7.
On St. Louis grounds, they say the person was in Terminal 2, at baggage claim and rode parking spot shuttle #3 to the parking area.
Those potentially exposed during the person’s flight are being notified directly.
The Illinois Department of Public Health said this is the first reported case of measles in Illinois in 2026.
They say the confirmed case of measles is an adult living in the Metro East area who had recently returned from out-of-state travel.
One Illinois community location has been identified so far: Good Shepherd Lutheran Church in Collinsville.
According to IDPH, people attending church on Feb. 8 between 8 a.m. and 12:15 p.m. were potentially exposed to measles.
The church has notified congregants.
Health leaders say other possible exposure locations have been identified in other states.
They say all of those with possible exposures should watch for the symptoms of measles for 21 days from the date of exposure, which would be Feb. 28 in this case. They should report to their local public health agency if symptoms appear.
According to DHSS, people who think they have measles should isolate themselves and call their health care provider before arriving to be tested.
You can click here for more information about measles and county-level MMR vaccination rates.
You can click here to find a nearby vaccination location in Illinois. You can also click here for more information on measles.
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