A traveler with one shot, a crowded terminal, and the world’s most contagious virus. Chicago’s O’Hare wasn’t locked down. Flights kept boarding. Families kept moving. Days later, a second case emerged nearby, and officials realized how thin their safety margin really was. Now, they’re racing time, urging passengers to watch, wait, and wond…
Measles is so contagious that one infected person can leave an invisible trail of virus hanging in the air for up to two hours after they’ve gone. At O’Hare’s Terminal 1, that meant thousands of unsuspecting travelers could have walked straight through danger on April 22 and 23, never knowing the risk. The first patient had only one MMR dose—
