US surpasses 1,000 measles cases for the 3rd time in 26 years: CDC
A sign outside a mobile clinic offering measles and flu vaccinations on February 6, 2026 in Spartanburg, South Carolina. (Sean Rayford/Getty Images)
(NEW YORK) — Measles cases have topped 1,000 in the United States for the third time in 26 years.
At least 154 new measles cases have been confirmed in the last week for a total of 1,136, according to updated data from the Centers for Disease Control and Prevention (CDC).
So far this year, cases have been confirmed in 27 states: Arizona, California, Colorado, Florida, Georgia, Idaho, Illinois, Kentucky, Maine, Minnesota, Nebraska, New Mexico, New York, North Carolina, North Dakota, Ohio, Oklahoma, Oregon, Pennsylvania, South Carolina, South Dakota, Texas, Utah, Vermont, Virginia, Washington and Wisconsin.
Just six measles cases were reported among international travelers so far this year, according to CDC data.
About 92% of cases are among people who are unvaccinated or whose vaccination status is unknown, CDC data shows.
Meanwhile, 4% of cases are among those who have received just one dose of the measles, mumps, rubella (MMR) vaccine and 4% of cases are among those who received the recommended two doses, according to the CDC.
The current measles situation in the U.S. is partly being driven by a large outbreak in South Carolina that began last year, with 979 cases recorded as of Friday, according to state health officials.
Last year, the U.S. recorded 2,281 measles cases, which is the highest number of national cases in 33 years, according to the CDC. Before that, the last time measles cases rose above 1,000 was 2019 — CDC data showed 1,274 that year. Recorded cases dropped to a low of 13 in 2020, the first year of the COVID-19 pandemic.
The CDC currently recommends people receive two doses of the MMR vaccine, the first at ages 12 to 15 months and the second between 4 and 6 years old. One dose is 93% effective, and two doses are 97% effective against measles, according to the CDC.
However, federal data shows vaccination rates have been lagging in recent years. During the 2024-2025 school year, 92.5% of kindergartners received the MMR vaccine, according to data. This is lower than the 92.7% seen in the previous school year and the 95.2% seen in the 2019-2020 school year, before the COVID-19 pandemic.
Catherine Stein, far right, speaks during a meeting of the CDC’s Advisory Committee on Immunization Practices on September 18, 2025 in Chamblee, Georgia. (Elijah Nouvelage/Getty Images)
(NEW YORK) — The Centers for Disease Control and Prevention’s vaccine advisory committee is set to meet Thursday and Friday to discuss the childhood vaccine schedule, adjuvants and contaminants, and the hepatitis B vaccine.
It marks the third meeting this year of the Advisory Committee on Immunization Practices (ACIP) since Health and Human Services Secretary Robert F. Kennedy Jr. fired all 17 members, replacing them with his own hand-selected picks, many of whom have expressed vaccine-skeptic views.
This is also the first meeting since the chair of the ACIP, Martin Kulldorff — a former Harvard Medical School professor — accepted a permanent role at HHS. Pediatric cardiologist and former U.S. Air Force flight surgeon Dr. Kirk Milhoan will chair the committee during the upcoming meeting.
Milhoan is a fellow with the Independent Medical Alliance, a group that has advocated for unproven treatments for COVID-19, including hydroxychloroquine and ivermectin.
A draft agenda posted online indicates the ACIP will discuss and vote on recommendations around the hepatitis B vaccine on day one and discuss the childhood vaccine schedule on day two.
“I think every single thing on that agenda is concerning,” Dr. Richard Besser, resident and CEO of the Robert Wood Johnson Foundation and acting director of the CDC during the administration of former President Barack Obama, told ABC News. “We have an administration [that] seems hellbent on undermining people’s trust in vaccination.”
Hepatitis B vaccine
Since the new ACIP members were installed, the committee has recommended against flu vaccines containing the preservative thimerosal — despite public health experts saying there is no evidence that low doses of thimerosal in vaccines cause harm — and has narrowed existing recommendations for the combined MMRV shot that protects against measles, mumps, rubella and chickenpox.
The first day of the meeting will include presentations and discussions about the hepatitis B vaccine.
The agenda also lists a scheduled vote and, although it’s not clear what will be voted on, experts believe the universal hepatitis B vaccine dose given at birth will be at issue.
The CDC currently recommends that the first dose of the three-dose hepatitis B vaccine be given to babies within 24 hours of birth. Doctors have said the universal birth dose recommendation has virtually eliminated hepatitis B among babies in the U.S.
However, earlier this year, Kulldorff questioned whether it was “wise” to administer shots “to every newborn before leaving the hospital.” Separately, Kennedy has falsely linked the hepatitis B vaccine to autism.
Some experts believe the panel will vote to either delay or remove the decades-long recommendation that newborns be vaccinated against hepatitis B.
“I am concerned that the committee is going to attempt to minimize the harm resulting from any changes to this long-standing recommendation,” Dr. Fiona Havers, a former CDC official who worked on vaccine policy and led the CDC’s tracking of hospitalizations from COVID-19 and RSV, told ABC News.
“They’re going to say that there’s no need to vaccinate babies at birth because you can screen mothers and only vaccinate babies born to patients who test positive or whose status is unknown,” she continued.
Havers said only vaccinating high-risk babies was the policy in the U.S. before the universal birth dose was implemented, but it was changed after doctors saw that babies and children continued to be infected with hepatitis B.
Additionally, babies infected with hepatitis B are at risk for chronic infection as well as liver disease, liver failure and even liver cancer.
“Babies can be infected not only by their mother if she has hepatitis B, but also by caregivers or others in the community who may not know that they have hepatitis B and any change to the routine recommendation means that we will see an increase in hepatitis B infections in infants and children,” Havers said.
She added, “Any hepatitis B infections that occur because a child wasn’t vaccinated at birth are an avoidable tragedy. We will start seeing more children living with a lifelong incurable infection that can lead to death from cirrhosis or liver cancer.”
Childhood immunization schedule
Besser said he is particularly concerned about the second day, which includes a discussion about the childhood immunization schedule.
The draft agenda is scant on details aside from topics including CDC vaccine risk monitoring evaluation discussion, vaccine schedule history, vaccine schedule considerations and a discussion of the childhood/adolescent immunization schedule
Earlier this year, the ACIP formed two new work groups, one focusing on the cumulative effects of children and adolescents receiving all recommended vaccines on the schedule and another reviewing vaccines that haven’t been examined for more than seven years.
Kennedy has suggested that children receive too many vaccine doses “to be fully compliant” and that the number of doses children receive has increased from three doses during his childhood to 92 doses today.
Doctors previously told ABC News that children actually receive about 30 vaccine doses and that the number of available, recommended immunizations has grown since the first vaccines were recommended in the late 1940s, based on evolving science and manufacturing capacity.
Besser said he has not heard safety concerns about the schedule from vaccine experts, pediatricians, those who administer vaccines or patient advocacy groups.
“There had not been concerns raised around the immunization schedule and forming a group that is going to look at [the schedule] wholesale when the going-in presumption is that it’s not safe really, really worries me,” Besser said.
The panel will also discuss vaccine “adjuvants and contaminants,” according to the draft agenda.
In a 2023 interview on The Joe Rogan Experience, Kennedy claimed aluminum adjuvants are neurotoxins and are associated with allergies, including food allergies.
The CDC says adjuvants are ingredients used in some vaccines to help boost the immune response and have been used safely in vaccines for more than 70 years.
(NEW YORK) — Flu activity could continue to increase in the U.S. over the next few weeks, according to a top flu epidemiologist at the Centers for Disease Control and Prevention.
“There’s a lot of influenza out there right now,” Dr. Carrie Reed, chief of the epidemiology and prevention branch of the CDC’s influenza division, told ABC News.
“We often see activity continue into the spring … I think the reality is that it’s going to continue to be elevated for a little bit longer,” she continued.
The CDC’s latest estimates indicate that there have been at least 11 million illnesses, 120,000 hospitalizations and 5,000 deaths from flu so far this season.
“That’s likely a low estimate based on the data that we’re seeing so far,” Reed said, adding that the federal health agency typically publishes the lower range of the estimates.
A new variant that first emerged in the summer, known as subclade K, has become the dominant strain, CDC data shows. Subclade K is a variant of the H3N2 virus, which is itself a subtype of influenza A.
Of the 994 flu samples tested since Sept. 30, nearly all were influenza A. Of those samples that underwent further testing roughly 90% were H3N2, CDC data shows.
“Subclade K has acquired some mutations in the virus that make it a little bit different than what’s in the vaccine and what was circulating over the last couple years,” Reed said.
Public health experts currently recommend that everyone ages 6 months and older, with rare exceptions, get an annual flu vaccine.
Although the current flu vaccine is not a perfect match to subclade K, it is still expected to offer some protection against the new variant and lower the risk of serious disease, hospitalization and death.
Reed added that the new variant does not appear to be driving more severe illness yet.
“There are still benefits to vaccine, even if the virus [has] somewhat drifted from what’s in the vaccine,” she said. “We haven’t seen increases in hospitalization and mortality yet in the ways that we have with [doctors’ visits], although that’s something that we continue to watch for as well.”
For those who have gotten sick, there are medicines available, known as antivirals, that may help reduce the severity and length of illness.
Reed said for those who contract the flu and have a higher risk of severe disease, they should seek care early and speak with their doctor about receiving a prescription for flu antivirals.
She explained that flu antivirals have been found to reduce the duration of illness as well as lower the risk for severe disease, hospitalization and death.
Health officials have stressed that it is not too late for people get a flu shot if they haven’t received one yet.
“There’s still time to get a flu vaccine,” Reed said. “It does take a couple weeks for your immune response to pick up after vaccination, but that does mean there’s many more weeks of flu activity to benefit from the protection of an influenza vaccine.”
(WASHINGTON) — Dr. Jay Bhattacharya, director of the National Institutes of Health (NIH), will take over as acting director of the Centers for Disease Control and Prevention, a White House official and sources familiar with the matter told ABC News.
Bhattacharya will continue in his current duties as NIH director until a permanent CDC director is nominated and confirmed, according to the White House official.
He replaces Jim O’Neill, who served as acting director of the CDC from late August 2025 until he stepped down last week.
O’Neill will be nominated as the next head of the National Science Foundation, according to the White House official.
