The Centers for Disease Control and Prevention said Friday that measles infections nationwide have climbed to 5,412 across 45 states, an increase of 230 cases from the previous Friday’s update. The new count comes as health officials may decide as soon as Friday whether the United States keeps its measles elimination status.
That decision matters because the country had averaged only 180 measles cases a year from 2000 through 2024. Now the outbreak has spread so widely that the current total is more than 30 times that long-term average, with infections appearing in almost every region of the country rather than in a single isolated cluster. For readers looking up WDSU news today, the updated CDC tally is the clearest marker of how far the disease has moved in a short time.
State health departments have reported eight deaths tied to the outbreak, including six in Pennsylvania, one in New York and one in Wisconsin. The rise is unfolding alongside a drop in childhood vaccination coverage: the share of kindergartners vaccinated against measles fell from 95% in 2019 to 92% in 2026, leaving roughly 300,000 kindergartners in classrooms this year without being vaccinated.
That matters because 95% vaccination rates are typically needed for herd immunity, and the measles, mumps and rubella vaccine is the standard two-dose protection against the disease. The first dose is given between 12 and 15 months of age, followed by a second dose between 4 and 6 years of age, and the two doses are 97% effective at preventing infection. When coverage falls below that threshold, the virus can move quickly: a sick person can infect 90% of unvaccinated people they come into contact with, and the virus can remain in the air and on surfaces for two hours after that person leaves the room.
The numbers also point to the cost of exposure. One in 5 unvaccinated people land in the hospital, one in 20 children get pneumonia, one in 10 children develop ear infections, one in 10 get diarrhea and one in 1,000 children develop encephalitis. Nearly one to three of every 1,000 children who become infected die from respiratory and neurological complications. The immediate question is not whether measles is still spreading; it is whether the latest CDC review will confirm that the United States has lost the status it has held for years, and how quickly public health officials move to contain the damage if it has.
