Amtrak has received notification from St. Louis County, Mo., that an individual who traveled on Amtrak train 303 (Chicago – St. Louis) on March 4, 2020, has tested presumptive positive for the coronavirus. We are working in close contact with public health and emergency management teams to have the best available information to be able to share with our customers and employees who might be affected. Amtrak is notifying passengers and employees who may have been on the same train, and as a precaution, we have taken the train out of service for comprehensive cleaning and disinfection, and are also working to do a thorough disinfection of the Chicago and St. Louis stations.

—via Press Release