Measles Cases and Outbreaks

CDC updates this page monthly.

Measles cases in 2021

As of September 13, 2021, six cases of measles were confirmed in three 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

Number of measles cases reported by year

2010-2020*(as of December 31, 2020)

*Case count is preliminary and subject to change.

travel icon

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: