South Carolina recently declared an end to its measles outbreak, marking the largest in the U.S. since 1991. This conclusion follows 42 days without new cases, after 997 infections—mostly in unvaccinated children—were reported over six months. The majority of cases were confined to the northwest part of the state. Dr. Edward Simmer, interim director of the South Carolina Department of Public Health, praised the response, highlighting prompt investigations and public cooperation as key factors.
Measles can lead to severe complications like pneumonia and brain swelling. Dr. Brannon Traxler noted that while many cases were mild, others posed life-threatening risks. In 2022, Texas saw three deaths due to measles, including two children. Those infected can face long-term issues like immune amnesia, which leaves them vulnerable to other infections. Moreover, children infected before age two are at greater risk of developing a rare but often fatal neurological condition years later.
The outbreak primarily affected Spartanburg County, where vaccination rates in schools remained below the 95% threshold needed for herd immunity. Thankfully, there has been a rise in vaccinations recently. However, pockets of unvaccinated individuals remain, posing an ongoing risk for future outbreaks.
Though South Carolina’s outbreak is under control for now, more than 20 new measles outbreaks have emerged across the U.S. this year, including notable ones in Texas, Florida, and Utah with over 100 confirmed cases each. Vaccination rates have been in decline nationwide; only 92.5% of kindergartners received the measles vaccine in the 2024-2025 school year, according to the CDC. In some communities, this percentage is significantly lower, setting the stage for potential outbreaks.
Last year, the U.S. reported 2,288 measles cases—the highest since 2000. This increase threatens the country’s status of having eliminated measles, which is defined as a year without transmission. This year, the CDC has confirmed 1,792 cases, suggesting that 2023 could surpass last year’s numbers.
In light of these statistics, experts stress the importance of vaccination. Dr. Peter Hotez, a vaccine researcher, suggests that continued public awareness and outreach are crucial in improving vaccination rates and preventing future outbreaks.
