Measles Cases Across the United States
Last updated:
619 confirmed measles cases in 30 states in 2026.
Measles cases have been reported in 30 states so far in 2026.
Cases by State
States with Active Outbreaks
All States
| State | Risk Level | Cases (2026) |
|---|---|---|
| Texas | Very High | 152 |
| South Carolina | Very High | 124 |
| Utah | Very High | 90 |
| Florida | Very High | 63 |
| Arizona | High | 27 |
| California | High | 20 |
| Washington | High | 15 |
| North Carolina | High | 13 |
| New Mexico | High | 12 |
| North Dakota | High | 12 |
| Colorado | High | 9 |
| Virginia | High | 8 |
| New York | High | 7 |
| Oklahoma | Moderate | 7 |
| Oregon | High | 7 |
| Pennsylvania | High | 7 |
| South Dakota | High | 7 |
| Minnesota | High | 5 |
| Ohio | High | 5 |
| Idaho | High | 4 |
| Maine | Moderate | 4 |
| Michigan | High | 4 |
| Illinois | Moderate | 3 |
| Kentucky | Moderate | 3 |
| Nebraska | Moderate | 3 |
| Georgia | High | 2 |
| Massachusetts | High | 2 |
| Wisconsin | Moderate | 2 |
| Missouri | High | 1 |
| Vermont | Moderate | 1 |
| Alabama | Low | 0 |
| Alaska | Low | 0 |
| Arkansas | Low | 0 |
| Connecticut | Low | 0 |
| Delaware | Low | 0 |
| District of Columbia | Low | 0 |
| Hawaii | Low | 0 |
| Indiana | Low | 0 |
| Iowa | Low | 0 |
| Kansas | Low | 0 |
| Louisiana | Low | 0 |
| Maryland | Low | 0 |
| Mississippi | Low | 0 |
| Montana | Low | 0 |
| Nevada | Low | 0 |
| New Hampshire | Low | 0 |
| New Jersey | Low | 0 |
| Rhode Island | Low | 0 |
| Tennessee | Low | 0 |
| West Virginia | Low | 0 |
| Wyoming | Low | 0 |
Measles Prevention: MMR Vaccination Coverage
Measles is preventable with the MMR vaccine. Communities need at least 95% coverage for herd immunity. See which states are above and below this threshold.
View MMR coverage by state →Measles Insights
Sources & Methods
Measles case data is compiled by the JHU Measles Tracking Team from state and local health department reports. Case counts may differ slightly from CDC totals due to reporting timing. County-level data is available on state pages. Learn more about our methods .
Frequently Asked Questions
How many measles cases have there been in the U.S. in 2026?
As of the latest data update, there have been 619 confirmed measles cases across 30 states in 2026.
Is there a measles outbreak in the United States in 2026?
Yes. The United States is experiencing a significant measles outbreak in 2026, with 619 confirmed cases reported across 30 states. This is among the largest measles outbreaks in recent U.S. history. The CDC recommends ensuring all children and adults are up to date on MMR vaccination.
Which states have the most measles cases right now?
Case counts vary by state and are updated weekly. Use the map and table above to see current case counts for every state. States with active outbreaks are highlighted in the red section above.
What are the symptoms of measles?
Measles symptoms typically begin 7–14 days after exposure and include high fever (up to 104°F), cough, runny nose, red and watery eyes (conjunctivitis), and a rash that starts on the face and spreads downward. Small white spots (Koplik's spots) inside the mouth may appear 2–3 days before the rash. If you suspect measles, contact your healthcare provider before visiting a clinic to avoid exposing others.
What counts as a measles outbreak?
A measles outbreak is generally defined as three or more linked measles cases in a community. Outbreaks tend to occur in communities with lower vaccination rates where the virus can spread more easily.
How can measles be prevented?
Measles is highly preventable with the MMR (measles, mumps, rubella) vaccine. Two doses of MMR vaccine are about 97% effective at preventing measles. Communities need at least 95% vaccination coverage to maintain herd immunity. Check MMR coverage by state .
Local Health Signal is not affiliated with the CDC or any government agency. Data is provided for informational purposes only and is not intended for clinical decision making. See our methods page for details on data sources and limitations.