Third measles case tied to St. Louis train; health officials warn of exposure at stadium, bars

In St. Louis, a single train journey has become the thread connecting three confirmed measles cases, reminding us that in an age of movement and gathering, the oldest contagions still find their corridors. What began as one exposure event has grown into an active transmission chain touching some of the city's most public spaces — a major stadium, neighborhood bars — places where strangers briefly share the same air. Health officials now work against the clock and the virus's quiet patience, asking a community to reckon with immunity it may have assumed but never confirmed.