Measles Update: March 20, 2026

Today, the Centers for Disease Control and Prevention (CDC) reported there were 1,487* cases of measles in the US as of March 19, 2026. Week-over week, that is an additional 125 cases and a 9.18% increase. Last week, the federal agency reported there was 1,362* confirmed cases.¹ This marks an increase in the number of cases from the previous week that saw a 6.2% increase in cases the week ending, March 12.

CDC said there were 1,478 measles cases were reported by 32 jurisdictions: Alaska, Arizona, California, Colorado, Florida, Georgia, Idaho, Illinois, Kentucky, Maine, Massachusetts, Michigan, Minnesota, Missouri, Nebraska, New Mexico, New York City, New York State, North Carolina, North Dakota, Ohio, Oklahoma, Oregon, Pennsylvania, South Carolina, South Dakota, Texas, Utah, Vermont, Virginia, Washington, and Wisconsin. A total of 9 measles cases were reported among international visitors to the US. The international number remains static from the previous week.¹

The federal agency reports “there have been 14 new outbreaks** reported in 2026, and 94% of confirmed cases (1,398 of 1,487) are outbreak-associated (323 from outbreaks in 2026 and 1,075 from outbreaks that started in 2025).” ¹

Jurisdiction Outbreaks

Last week, there were cases reported in 31 jurisdictions, and this week it was reported in 32. This is a slight increase from week-to-week. Large outbreaks have been happening across a few states most notably South Carolina (668 cases), Utah (275 cases), Texas (147 cases), and Florida (122 cases). Conversely, there are still 19 states that do not have any reported cases. Several of these states are in geographic clusters including the deep south, northeast, and mountain west.

*It is important to note that the CDC says on its website that the federal agency is aware of probable measles cases being reported by jurisdictions. However, the data on this page only include confirmed cases that jurisdictions notified the CDC about. Therefore, there could be higher numbers in the US overall.

**CDC reports the cumulative number of measles outbreaks (defined as 3 or more related cases) that have occurred this year in the US; states have the most up-to-date information about cases and outbreaks in their jurisdictions.

References

1.Measles Cases and Outbreaks. CDC. March 20, 2026. Accessed March 20, 2026.
https://www.cdc.gov/measles/data-research/index.html