Measles is one of the deadliest and most contagious infectious diseases—and one of the most easily preventable

“You don’t count your children until the measles has passed.”

, one of the pioneers of the first measles vaccine in the late 1950s to early 1960s, regularly heard this tragic statement from parents in countries where the measles vaccine was not yet available, because they were so accustomed to losing their children to measles.

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