The U.S. is experiencing its worst measles resurgence in decades. More than 3,600 confirmed cases and two deaths have been reported as of late September. Outbreaks in several states and exposures in public places like bars, sports stadiums and public transit have raised concerns about travel safety. Almost all U.S. measles cases involve unvaccinated individuals, and as the outbreaks grow in some states, the risk of exposure is getting higher. Here’s what to know before traveling by plane or train.
✈️ People who've had two doses of the MMR vaccine are considered protected against measles.
✈️ The disease is highly contagious. It spreads through the air when an infected person coughs, breathes or sneezes. That airspace can remain contaminated for up to two hours.
✈️ Check with your healthcare provider about your vaccination status. They may recommend a booster based on your medical history and health.
✈️ Immunocompromised individuals may be unable to receive vaccination and often rely on herd immunity for protection. For measles, the vaccination threshold for herd immunity is 95%.
✈️ Measles can be hard to track because symptoms — such as fever, cough, and rash — typically appear seven to 14 days after exposure and can sometimes take long as 21 days to surface. | 
