More measles exposures are happening at airports and tourist destinations. Here’s what travelers need to know CNNMeasles can be a risk during air travel. Here’s how to stay safe. The Washington PostCDC Health Advisory Says This 'Ongoing Risk' Leaves Travelers Vulnerable on Planes, Trains, Public Transport, and More Travel + LeisureWarning of overseas outbreaks, CDC urges Americans to get the measles vaccine before traveling abroad NBC NewsCDC steps up measles travel warning after spread in airplane CBS News