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Why is measles so contagious?


177 Questions Answered

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You might be surprised to hear that measles is 10 times more contagious than Ebola or the plague. So what makes the measles virus so contagious? And how do epidemiologists quantify a disease's catchiness? SciShow explores why measles is so dangerous.

The average number of people that a single sick person infects is known as:

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