Measles Q&A: If I'm Vaccinated, Can I Infect Others?

ABC News Chief Health and Medical Editor Dr. Richard Besser answers questions from Facebook and Twitter about the recent spread of measles.
0:41 | 02/04/15

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Transcript for Measles Q&A: If I'm Vaccinated, Can I Infect Others?
I've been getting so many questions on social media about measles I'm an answer those who can't Coffey asked on Twitter. What about so many reports a vaccinated people getting measles infecting others. Hash tag measles hash tag backs quarterbacks. Here's the thing again this is one of the most effective vaccines behalf but it's not perfect. 99% of people who get two doses are protected. But if a hundred of those people are exposed to measles one of them is gonna get sick. But you're not vaccinated. Ninety out of a hundred people were exposed to this disease we'll get it. Vaccination is definitely the way to go.

This transcript has been automatically generated and may not be 100% accurate.

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