Measles Cases and Outbreaks
CDC updates this page weekly.
Measles cases in 2024
As of March 21, 2024, a total of 64 measles cases were reported by 17 jurisdictions: Arizona, California, Florida, Georgia, Illinois, Indiana, Louisiana, Maryland, Michigan, Minnesota, Missouri, New Jersey, New York City, Ohio, Pennsylvania, Virginia, and Washington.
Did you know that measles can be found around the world?
Number of measles cases reported by week
2023-2024* (as of March 21, 2024)
Note: rash onset date is currently unknown for one reported case in 2024.
Jurisdictions Reporting Cases in 2024
As of March 21, 2024
Number of measles cases reported by year
2000-2024* (as of March 21, 2024)
*Case count is preliminary and subject to change.
Measles cases in 2023
During January 1-December 31, 2023, a total of 58 measles cases were reported by 20 jurisdictions: California, Colorado, District of Columbia, Florida, Hawaii, Idaho, Illinois, Kentucky, Maryland, Missouri, New Jersey, New York City, Ohio, Oregon, Pennsylvania, Texas, Utah, Virginia, Washington, and Wisconsin.
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