What's happened
A resurgence of measles has led to over 310 cases in South Carolina and other states, marking the worst outbreak since 1991. The rise is linked to declining vaccination rates amid misinformation and political skepticism, threatening US's eliminated status for measles.
What's behind the headline?
The current measles resurgence exposes the fragility of herd immunity in the US. Despite scientific consensus on vaccine safety, misinformation fueled by anti-vaccine figures like RFK Jr. and political figures has eroded public trust. The outbreak's concentration in areas with low vaccination coverage, such as Spartanburg County, underscores the importance of maintaining high immunization rates. The spread to neighboring states highlights how holiday travel and gatherings facilitate transmission. If vaccination rates do not improve, the US risks losing its measles elimination status, which could lead to more frequent and severe outbreaks. The situation demonstrates the critical need for public health campaigns to counter misinformation and increase vaccine uptake to prevent further health crises.
How we got here
The US declared measles eliminated in 2000, but recent outbreaks have surged due to declining vaccination rates, misinformation, and vaccine exemptions. The 2025 outbreak saw over 2,100 cases, the highest since 1991, driven by low immunization coverage and public skepticism.
Our analysis
The Independent reports that outbreaks have been detected in nine states, with cases surging to 124 in South Carolina, and warns that the US may lose its measles elimination status due to declining vaccination rates. The New York Times details the outbreak's growth to 310 cases, mainly among children, and highlights the impact of low vaccination coverage in Spartanburg County. Ars Technica emphasizes the ongoing spread with 99 new cases since Tuesday, and notes that only 90% of students in the affected area are fully vaccinated. All sources agree that misinformation and vaccine exemptions are key drivers of the resurgence, with experts warning that the US is on the brink of a significant setback in disease control.