Measles Cases and Outbreaks
CDC updates this page monthly.
Measles cases in 2023
As of, November 2, 2023, a total of 41 measles cases were reported by 18 jurisdictions.
Measles cases in 2022
From January 1 to December 31, 2022, a total of 121 measles cases were reported by 6 jurisdictions. *
Measles cases in 2021
From January 1 to December 31, 2021, a total of 49 measles cases were reported by 5 jurisdictions. *
Measles cases in 2020
From January 1 to December 31, 2020, 13 individual cases of measles were confirmed in 8 jurisdictions.*
*Jurisdictions refer to any of the 50 states, New York City, and the District of Columbia.
Measles cases in 2019
- From January 1 to December 31, 2019, 1,274* individual cases of measles were confirmed in 31 states.
- This is the greatest number of cases reported in the U.S. since 1992. The majority of cases were among people who were not vaccinated against measles. Measles is more likely to spread and cause outbreaks in U.S. communities where groups of people are unvaccinated.
- For more information please see the following reports:
- Increase in Measles Cases – United States, January 1-April 26, 2019 MMWR. May 3, 2019
- National Update on Measles Cases and Outbreaks – United States, January 1-October 1, 2019. MMWR. October 11, 2019
Did you know that measles can be found around the world?
Number of measles cases reported by year
2010-2023* (as of November 2, 2023)
*Case count is preliminary and subject to change.
Make sure you are vaccinated against measles before traveling internationally.
Measles outbreaks
In a given year, more measles cases can occur for any of the following reasons:
- an increase in the number of travelers who get measles abroad and bring it into the U.S., and/or
- further spread of measles in U.S. communities with pockets of unvaccinated people.
For specific information on measles cases in recent years please see the following reports:
