If measles is eliminated from the Americas, why do people still get it in the United States?

Every year, unvaccinated travelers (Americans or foreign visitors) get measles while they are in other countries and bring measles into the United States. They can spread measles to other people who are not protected against measles, which sometimes leads to outbreaks. This can occur in communities with unvaccinated people.

Most people in the United States are protected against measles through vaccination. Measles cases in the U.S. are uncommon compared to the number of cases before a vaccine was available. Since 2000, when public health officials declared measles eliminated from the U.S., the annual number of people reported having measles ranged from a low of 37 people in 2004 to a high of 667 people in 2014.

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1. How do I know if I am fully vaccinated?
2. What are the signs and symptoms of measles?
3. Have there been Measles cases in the United States and in California in 2019?
4. How is measles transmitted?
5. I’ve been exposed to someone who has measles. What should I do?
6. I don’t know if I was exposed, but I am concerned that I may have been, what should I do?
7. Am I protected against measles?
8. I only received one dose of measles vaccine, am I protected?
9. What should I do if I’m unsure whether I’m immune to measles?
10. Where can I get the Measles Vaccine?
11. How effective is the measles vaccine?
12. Could I still get measles if I am fully vaccinated?
13. Do I ever need a booster vaccine?
14. If measles is eliminated from the Americas, why do people still get it in the United States?