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How Did We Get Here? 7 Things To Know About Measles

Measles vaccination rates need to be at 93% to 95% to keep herd immunity. Otherwise, very young infants or other vulnerable people can be exposed to the virus. (Getty Images)
Measles vaccination rates need to be at 93% to 95% to keep herd immunity. Otherwise, very young infants or other vulnerable people can be exposed to the virus. (Getty Images)

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