Amtrak didn’t tell us about this exposure, so heads up: if you took an Amtrak train last week through Chicago or anywhere on the Southwest Chief, Coast Starlight, or California Zephyr routes like we did, you may have been exposed to measles! Please let the train people in your life know about this
Re This case: Most media are focusing on their own states, but this was a multi-state trip. The person took the whole route of the Southwest Chief, so Illinois through the midwest, then across S. Colorado, New Mexico, and Arizona before LA. Then up the coast, and back across on California Zephyr.