U.S. measles update, AI-powered wars and global warming in a hurry
South Carolina's measles outbreak reached nearly 1,000 cases, contributing to over 2,200 confirmed U.S. cases in 2025, the highest since measles elimination was declared in 2000, primarily affecting unvaccinated populations.
The South Carolina Measles Outbreak Is Slowing Down
South Carolina's measles outbreak, the largest in the US in 30 years, is slowing with approximately 10 weekly cases reported, down from 200 at its January peak, though the US risks losing its measles elimination status.
A measles outbreak in north London shows signs of stabilization, though cases remain possible, with most severe cases occurring in unvaccinated patients and vaccination rates significantly below the 95% threshold needed to prevent outbreaks.
U.S. measles update, AI-powered wars and global warming in a hurry
South Carolina's measles outbreak reached nearly 1,000 cases, contributing to over 2,200 confirmed U.S. cases in 2025, the highest since measles elimination was declared in 2000, primarily affecting unvaccinated populations.
Measles cases surge in north London with Enfield and Haringey accounting for nearly half of national cases, primarily affecting unvaccinated children in schools and nurseries.
Mumps cases are rising across 11 U.S. regions with at least 34 confirmed cases, driven by declining MMR vaccination rates amid post-COVID vaccine hesitancy.
California measles outbreaks linked to pockets of unvaccinated residents
California health departments must identify and quarantine measles contacts within 72 hours, as measles is extremely contagious with nine of ten unvaccinated people contracting it from one infected person.
In some counties, vaccination rates increased after the pandemic, which got them past the recommended level of protection. Many more counties decreased their rates though.
Florida's surgeon general has confirmed his office did not conduct any analysis to project how removing school vaccine requirements would impact children in the state.
In 2024, the U.S. saw 35,435 cases of whooping cough, revealing a concerning surge that highlights decreasing vaccination rates amid ongoing fears from the COVID-19 pandemic.