Even One Vaccination Works: Five Things To Know About Measles

January 28, 2015 10:16 PM

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The measles outbreak has now infected 94 people in eight states — the vast majority live in California, and 67 of those illnesses are linked to Disneyland, California health officials reported Wednesday.

Ninety percent of people exposed to measles virus will catch it if they haven't been vaccinated or if they weren't infected before. That means 90 percent of babies under a year old will catch it if they come near enough to an infected person.

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