US measles cases exceed 4,500 as Pennsylvania infections reach 1,360.
Is it spreading to new areas?
Spread confirmed
As of 27 October 2026, health officials have reported new cases and exposures in areas including Macon County, DuPage County in Illinois, and Houston County in Georgia.
Sources: CBS NewsCBS News 2CBS News 3Key figures
| Figure | Value | Basis | As of | Sources |
|---|---|---|---|---|
| Total US Measles Cases Stated by the CDC and reported by CIDRAP. | 4,588 | Official | Sources: ReutersCIDRAP | |
| Pennsylvania Measles Cases Reported by the Pennsylvania Department of Health. | 1,360 | Press reports | Sources: Reuters6abc Philadelphia | |
| Lancaster County Cases Reported by local news outlet LNP | LancasterOnline. | 478 | Unverified | Sources: LNP | LancasterOnline | |
| US Measles Deaths (CDC) Confirmed by the CDC. | 3 | Official | Sources: Fox NewsReuters |
Who says what
| Who | Says | Date | Sources |
|---|---|---|---|
| Centers for Disease Control and Prevention (CDC) | Confirmed three US measles-related deaths and sent a disease investigator to Pennsylvania to support the outbreak response. | Sources: Fox NewsCBS News | |
| Pennsylvania Department of Health | Reported 1,360 confirmed cases statewide and issued alerts warning doctors and the public about congenital measles and pregnancy risks. | Sources: Reuters6abc Philadelphia6abc Philadelphia 2 | |
| Jennifer Shuford (CDC Deputy Director) | Resigned after four months in the role amid a dispute over the CDC's refusal to acknowledge measles-related deaths reported in Pennsylvania. | Sources: The Philadelphia Inquirer |
Summary
As of 27 October 2026, health officials reported new measles cases in Macon County and CDC Deputy Director Jennifer Shuford resigned amid a dispute over the agency's refusal to acknowledge measles-related deaths reported in Pennsylvania.
Total national cases in the United States have reached 4,588 according to the CDC, with Pennsylvania reporting 1,360 confirmed cases, including 478 infections in Lancaster County.
Pennsylvania health officials have issued warnings regarding congenital measles and risks during pregnancy as state media reports six measles deaths, compared to three acknowledged nationally by federal health authorities.
Timeline
- Pennsylvania cases reach 1,286 as a CDC epidemic intelligence officer arrives to assist with the state outbreak response.Sources: ReutersLNP | LancasterOnline
- The CDC recognizes a third US measles death, while local media report a sixth death in Pennsylvania.Sources: ReutersFOX 29 Philadelphia
- DuPage County in Illinois confirms its first 2026 case following potential exposure at Chicago O'Hare International Airport.Sources: CBS News
- The CDC reports total US measles cases have reached 4,588.Sources: ReutersCIDRAP
- Pennsylvania Department of Health reports 73 new cases over the past week, bringing total cases in Pennsylvania to 1,360.Sources: 6abc PhiladelphiaReuters
- CDC Deputy Director Jennifer Shuford resigns amid a dispute over unacknowledged Pennsylvania deaths, and health officials report new cases in Macon County.Sources: The Philadelphia InquirerCBS News
Still unknown
- The official reason for the discrepancy between Pennsylvania state reports of measles deaths and national CDC tallies.
- Whether the CDC will approve faster high-volume testing requested by state health departments.
- The potential scope of secondary exposures linked to public transport and medical center exposure locations.