as well as the reminder that children under 1 (and really a bit beyond that, takes a few weeks to build immunity/get appointments scheduled and attended) cannot be vaccinated for this. And remember that hot minute that everyone thought about washing their groceries in early Covid? Measles is the type where you do want to do that. It can hang in the air for about an hour after an infected person sneezes, coughs, etc. in that area - and a few hours on surfaces. It's insanely contagious. So maybe you didn't attend that revival event but you went through the same airport. Just think of how much space a single contagious person could contaminate in an airport or public area.