Recent CDC reports indicate several hundred confirmed measles cases across multiple jurisdictions. South Carolina accounts for the largest share. This overview summarizes official counts, affected areas, and practical steps for families with ties to India.
TL;DR
- Several hundred total cases reported nationwide so far in 2026, with the majority tied to 2025 transmission chains.
- South Carolina leads with the largest share centered in Spartanburg County.
- Two doses of MMR vaccine provide 97 percent protection against infection.
- Most cases involve unvaccinated children and teens under age 19.
- NRIs should verify vaccination records before travel or school enrollment.
National Case Counts January 2026
The CDC publishes weekly provisional numbers based on rash onset dates. Current totals stand at several hundred confirmed infections. Of these, most involve US residents and a few involve international visitors. Fourteen jurisdictions have recorded cases: Arizona, California, Florida, Georgia, Idaho, Kentucky, Minnesota, North Carolina, Ohio, Oregon, South Carolina, Utah, Virginia, and Washington.
Most infections trace back to clusters that began in late 2025. No entirely new multi-state outbreaks started in 2026 through the latest reporting date.
South Carolina Outbreak Details
South Carolina’s Department of Public Health reports more than 700 cases as of January 23 2026. The outbreak began October 2 2025 and remains centered in Spartanburg County. Spillover has reached Greenville, Anderson, and Cherokee counties. The majority of patients are unvaccinated children and adolescents. At least 12 hospitalizations have occurred for pneumonia and dehydration. No deaths have been recorded in this cluster to date.
Other State Clusters
Utah lists 32 cases and Arizona lists at least 12 cases linked to a cross-border cluster that started in 2025. North Carolina added more than 12 cases in early 2026. Smaller numbers appear in California, Florida, Georgia, Idaho, Kentucky, Minnesota, Ohio, Oregon, Virginia, and Washington. Holiday travel contributed to some spread.
State Case Summary
| State | Reported Cases (2026) | Primary County |
|---|---|---|
| South Carolina | 700+ | Spartanburg |
| Utah | 32 | Multiple |
| Arizona | 12+ | Border counties |
| North Carolina | 12+ | Scattered |
| Other 10 jurisdictions | Under 10 each | Varies |
Vaccination Coverage Trends
National kindergarten MMR coverage sits near 92.7 percent. Several communities fall below the 95 percent threshold needed for herd immunity. Post-pandemic clinic disruptions and rising exemption rates have widened gaps. Imported cases can ignite rapid local transmission in under-vaccinated pockets.
Transmission and Complications
Measles spreads through airborne droplets and can remain infectious in the air for up to two hours. The basic reproduction number ranges from 12 to 18. Complications include pneumonia, encephalitis, and, rarely, subacute sclerosing panencephalitis years later. Children under five and immunocompromised individuals face higher hospitalization rates.
Public Health Measures in Place
State health departments have opened mass vaccination clinics and issued quarantines for more than 500 exposed individuals. Schools have excluded unvaccinated students during outbreaks. Federal agencies provided additional response funding to South Carolina.
Steps for NRI Families
Review MMR vaccination records for all household members. Adults born after 1957 without documented immunity should receive two doses. Families planning travel to India should confirm protection, as measles circulates there as well. Monitor exposed children for fever, cough, and rash. Contact a physician promptly if symptoms appear. State health department websites and cdc.gov/measles provide location-specific alerts.
Next steps
Check personal and family vaccination status through state immunization registries. Schedule catch-up doses at local pharmacies or clinics listed on vaccines.gov. Subscribe to state health department email alerts for the jurisdictions where you live or have relatives.
