2026 at a Glance
- 4080 confirmed cases nationwide as of October 8, 2026
- 47 jurisdictions with reported cases
- 92% of cases are linked to known outbreaks
- Pennsylvania is the current hotspot (PA DOH: 1,078 cases across 41 counties as of October 7, 2026); South Carolina had a major earlier Upstate outbreak
Major Outbreak States
| State | 2026 Cases | Notes |
|---|---|---|
| Pennsylvania | 1,078 | Current U.S. hotspot. PA DOH update reported 1,078 confirmed cases across 41 counties as of October 7, 2026 (207 hospitalizations; 5 measles-associated deaths under PA DOH definition — not the same as CDC national 2*). DOH notes many recent case additions are delayed reports. See pa.gov/measles. |
| South Carolina | hundreds+ | Major Upstate/Spartanburg outbreak earlier in 2025–26 (near ~1,000 cumulative in spring reporting). Verify current count with SC DPH — hardcoded figure is a soft floor, not live. |
| Utah | tens+ | Ongoing since 2025; spring reporting cited large multi-year totals. Soft floor only — verify with Utah DHHS. |
| Arizona | tens+ | Ongoing since 2025 including Mohave County activity. Soft floor only — verify with AZ DHS. |
Other States Reporting Cases
| State | 2026 Cases |
|---|---|
| Alabama | <10 |
| Alaska | <10 |
| California | tens+ |
| Colorado | <10 |
| Connecticut | <10 |
| Delaware | <10 |
| District of Columbia | <10 |
| Florida | tens+ |
| Georgia | <10 |
| Idaho | <10 |
| Illinois | <10 |
| Indiana | <10 |
| Iowa | <10 |
| Kansas | <10 |
| Kentucky | <10 |
| Louisiana | <10 |
| Maine | <10 |
| Maryland | <10 |
| Massachusetts | <10 |
| Michigan | <10 |
| Minnesota | <10 |
| Missouri | <10 |
| Montana | <10 |
| Nebraska | <10 |
| New Jersey | <10 |
| New Mexico | <10 |
| New York City | <10 |
| New York State | <10 |
| North Carolina | tens+ |
| North Dakota | <10 |
| Ohio | <10 |
| Oklahoma | <10 |
| Oregon | <10 |
| Rhode Island | <10 |
| South Dakota | <10 |
| Tennessee | <10 |
| Texas | <10 |
| Vermont | <10 |
| Virginia | <10 |
| Washington | tens+ |
| West Virginia | <10 |
| Wisconsin | <10 |
| Wyoming | <10 |
Key Details by Outbreak Region
Pennsylvania (current hotspot)
Pennsylvania Department of Health reported 1,078 confirmed measles cases across 41 counties as of October 7, 2026 (207 hospitalizations; 5 measles-associated deaths under PA DOH definition — not the same as CDC's national 2*). DOH notes many recent case additions are delayed reports. Prefer primary dashboards over secondary headlines.
For the latest Pennsylvania numbers: PA Department of Health / measles page
South Carolina (earlier Upstate outbreak)
South Carolina's Upstate outbreak (including Spartanburg County) was a major driver earlier in the 2025–26 wave and produced near-~1,000 cumulative cases in spring reporting. Treat older quarantine/child-count figures as historical context — verify current counts with SC DPH.
For the latest South Carolina numbers: SC Department of Public Health
Utah
Utah has had ongoing measles activity since 2025. Earlier spring reporting cited large multi-year totals; per-state numbers on this site are soft floors only. Check Utah DHHS for current figures.
For the latest Utah numbers: Utah Department of Health and Human Services
Arizona
Arizona has reported ongoing activity since 2025, including Mohave County. Soft floor only on this site — verify with AZ DHS.
For the latest Arizona numbers: Arizona Department of Health Services
Other states
Additional jurisdictions appear in the CDC list and tables below. Many per-state figures here remain soft floors because CDC's page does not publish a complete live state-by-state case table in scrapeable form.
Understanding the Data
- Confirmed cases are lab-confirmed or epidemiologically linked to a confirmed case. The CDC only counts confirmed cases in its official totals.
- Probable cases may be reported by states but are not included in CDC counts.
- CDC updates its national data weekly (Thursdays at noon). State health departments may update more frequently.
- A single outbreak can span multiple states. The CDC may count linked cases across states as one outbreak, while each state reports its own case count separately.
What These Numbers Mean for You
If you live in or plan to travel to a state with active cases, confirm your vaccination status now. The MMR vaccine is widely available at pharmacies, doctor offices, and local health departments. If you are unsure whether you are immune, a simple blood test can tell you.