> People with measles can become contagious up to four days before developing symptoms and measles particles are known to be able to hang in the air for up to t

> People with measles can become contagious up to four days before developing symptoms and measles particles are known to be able to hang in the air for up to two hours. > “Measles is perhaps the most contagious disease that we know of,” Cieslak said in the Aug. 8 news briefing. > One to three of every 1,000 children who contract measles can die, and complications from the disease can lead to lifelong effects including hearing loss, deafness and intellectual disabilities