Measles cases in the United States have crossed 5,182 this year, pushing federal health authorities to confront a severe public health challenge not seen since 1991.
An independent commission of the Pan American Health Organization began assessing whether the country has lost its measles elimination status in Washington. The review places the U.S., Mexico, and Guatemala under intense scrutiny following continuous virus transmission.
The U.S. has maintained its elimination status since 2000. That milestone now hangs in the balance as the CDC confirmed 5,182 cases nationwide in 2026. Children and teenagers account for about 59 percent of those confirmed infections.
Measles elimination ends when one strain spreads nonstop for a year. Three chains of measles transmission traced back to Texas have been going for over a year. Save and send to a parent: https://t.co/gbtkh8YHaQ Read & subscribe for free: https://t.co/yjIDWlTmf2 pic.twitter.com/oFPVYqvXJ1
Declining immunization rates among kindergarteners have left distinct geographic pockets of vulnerability. Federal data indicates that vaccination rates for kindergarten students fell from 95.2 percent during the 2019-2020 academic year to 92.4 percent throughout the 2025-2026 school year.
Anand Parekh, who serves as the chief health policy officer at the School of Public Health and previously acted as deputy health secretary for U.S. Health and Human Services, told News-Medical that “the spillover effects from inaccurate and revisionist COVID claims are now impacting childhood vaccination rates.”
State and federal authorities dispute measles death counts
At least eight measles-related deaths have been reported by state health authorities. However, federal and state tallies remain at odds over fatality classifications.
The Pennsylvania Department of Health documented 1,487 cases and six deaths this year by applying a protocol that counts measles-related fatalities if a patient with a confirmed diagnosis dies within 30 days of symptom onset, provided the death was not caused by an unrelated incident. The CDC initially included two of those Pennsylvania fatalities before removing them after intervention from U.S. Health Secretary Robert F. Kennedy Jr.
“. experts convening on Tuesday to decide whether the United States should lose its official designation as a nation that has eliminated measles.”@nytimes https://t.co/YAozbJwKeU pic.twitter.com/PtWLnjXHqQ
Laraine Washer, medical director of infection control for the U-M Health System and Medical School, told News-Medical that “the impending loss of measles elimination status in the United States is a preventable public health tragedy and a reversal of hard-won gains achieved through decades of vaccination efforts.”
The evaluation panel in Washington will conclude its review and submit recommendations to Pan American Health Organization Director Jarbas Barbosa, with an official announcement expected at the beginning of next week.
Measles elimination requires sustained vaccination and quick response
Canada lost the corresponding status in November, while Peru and Bolivia are also at risk.
According to Gordon, current measles trends in North America serve as a warning that elimination cannot be viewed as permanent; he further said that while we possess the necessary tools to stop the virus, preserving this defense necessitates consistent vaccination efforts alongside the capacity to rapidly detect and address outbreaks.
PAHO's commission is meeting this week on whether the US keeps its measles elimination status. The US had 85 cases the year it eliminated measles in 2000. This year it's past 5,100. It may come down to sequencing, whether outbreaks across states trace to one lineage for 12… pic.twitter.com/R9lZIsJTmX
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My comments with @ABC @MaryKekatos about meetings this week to examine America’s measles elimination statushttps://t.co/QxvE5wulz0
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