Health and Human Services Secretary Robert F. Kennedy Jr. shared photos of himself submerged in Washington, D.C.’s Rock Creek with his grandchildren, despite longstanding warnings that high bacterial levels make the Potomac River tributary unsafe.
“Mother’s Day hike in Dumbarton Oaks Park with Amaryllis, Bobby, Kick, and Jackson, and a swim with my grandchildren, Bobcat and Cassius in Rock Creek,” RFK Jr. wrote alongside four photos from the outing posted to X on Sunday.
The photos show the 71-year-old member of President Donald Trump’s administration both sitting in the water and completely submerging in the shallow creek.
Mother’s Day hike in Dumbarton Oaks Park with Amaryllis, Bobby, Kick, and Jackson, and a swim with my grandchildren, Bobcat and Cassius in Rock Creek. pic.twitter.com/TXowaSMTFY
— Robert F. Kennedy Jr (@RobertKennedyJr) May 11, 2025
Longstanding warnings from the National Park Service (NPS), however, say to stay out of the water because of high bacteria levels.
“Rock Creek has high levels of bacteria and other infectious pathogens that make swimming, wading, and other contact with the water a hazard to human (and pet) health,” the federal agency warns on a webpage for the park.
Staying out of the water also helps to protect the natural landscape from erosion and negative impacts to wildlife as well, according to the NPS.
Washington, D.C., has banned swimming in waterways for over 50 years because of the widespread contamination.
According to the Environmental Protection Agency, Rock Creek has been found to have “fecal contamination” from sewage and high levels of bacteria, including E. coli.
Despite the federal warnings and signs in the area detailing the risks, people have been known to still swim or wade in the water.
ABC News has reached out to Robert F. Kennedy Jr. for a comment.
(WASHINGTON) — Earlier this week, President Donald Trump announced he will be nominating Dr. Casey Means for U.S. surgeon general, replacing his former pick, Dr. Janette Nesheiwat, after questions emerged about her credentials.
Means has been prominent in the “Make America Healthy Again” movement championed by Health and Human Services Secretary Robert F. Kennedy Jr.
In a post on social media, Trump said Means would work closely with Kennedy “to ensure a successful implementation of our Agenda in order to reverse the Chronic Disease Epidemic, and ensure Great Health, in the future, for ALL Americans.”
Means describes herself online as a “former surgeon turned metabolic health evangelist” who is “striving to create a happier and healthier world and planet.”
Here is what we know about Means’ background and what her views are on various health topics.
Medical background
Means graduated from Stanford University in 2009 with a bachelor’s degree in human biology and a doctor of medicine degree from Stanford School of Medicine in 2014, according to her LinkedIn profile.
She was a resident physician at Oregon Health and Science University with the goal of becoming an otolaryngology surgeon, also known as a head and neck surgeon, but she dropped out in her fifth year.
“During my training as a surgeon, I saw how broken and exploitative the healthcare system is and left to focus on how to keep people out of the operating room,” she wrote on her website.
Means went on to study functional medicine, which looks to prevent disease and illness. She is not board-certified in a medical specialty.
Following her exit from the residency, she was a guest lecturer at Stanford for less than a year and an associate editor at the International Journal of Disease Reversal and Prevention for two and a half years, according to LinkedIn.
Over the course of her career, she co-founded Levels, an app that allows people to track their food. along with biometric data like sleep and glucose monitoring, to see how their diet is impacting their health.
Rise to prominence
Means wrote a book with her brother, Calley Means, titled “Good Energy,” which was published in May 2024 and allegedly takes a look at why Americans are sick and how to fix it.
The Means siblings appeared on podcasts, including The Tucker Carlson Show in August 2024 and The Joe Rogan Experience in October 2024.
On Tucker Carlson’s show, Casey Means said birth control is being “prescribed like candy” and that Ozempic has a “stranglehold on the U.S. population.”
The siblings rose to prominence within the Trump campaign and among Trump allies, including Kennedy. They appeared at a September 2024 roundtable discussion on health with Kennedy hosted by Sen. Ron Johnson, R-Wisc.
“The message I’m here to share and reiterate is that American health is getting destroyed,” Casey Means said during her opening remarks. “It’s being destroyed because of chronic illness.”
Meanwhile, Calley Means currently serves as White House senior adviser and special government employee. He has worked closely with Kennedy and has touted many of his health proposals.
Controversial views
Casey Means’ views mirror those of Kennedy’s with a focus on tackling the chronic disease epidemic, creating a healthier food supply and expressing vaccine skepticism.
She has called for the removal of ultra-processed foods in school lunches and has advocated for organic, regenerative foods in school meals.
In 2021, she wrote in a post on X that glucose “as a molecule has caused more destruction of the human mind and body than any other substance in human history.”
Glucose is a naturally occurring molecule that our body depends on for energy.
Casey Means has expressed skepticism about the safety of childhood vaccines and has called for more research on the “safety of the cumulative effects” of vaccines when following the Centers for Disease Control and Prevention (CDC) vaccine schedule, she wrote in her Good Energy newsletter.
“There is growing evidence that the total burden of the current extreme and growing vaccine schedule is causing health declines in vulnerable children. This needs to be investigated,” she continued.
She has also criticized the administration of hepatitis B vaccine among infants, which is recommended by the CDC.
There is currently no evidence to suggest that childhood vaccines or the current CDC vaccine schedule are unsafe.
ABC News’ Katherine Faulders and Kelsey Walsh contributed to this report.
(NEW YORK) — The U.S. has surpassed 1,000 measles cases for the first time in five years, according to new data from the Centers for Disease Control and Prevention (CDC) published Friday.
A total of 1,001 cases have been confirmed in 30 states including Alaska, Arkansas, California, Colorado, Florida, Georgia, Hawaii, Illinois, Indiana, Kansas, Kentucky, Louisiana, Maryland, Michigan, Minnesota, Missouri, Montana, New Jersey, New Mexico, New York, North Dakota, Ohio, Oklahoma, Pennsylvania, Rhode Island, Tennessee, Texas, Vermont, Virginia and Washington.
The last time the U.S. recorded more than 1,000 cases occurred in 2019, when there were 1,274 confirmed infections over the course of a year, CDC data shows.
The CDC says 13% of measles patients in the U.S. this year have been hospitalized, the majority of whom are under age 19.
Among the nationally confirmed cases, CDC says about 96% are among people who are unvaccinated or whose vaccination status is unknown.
Meanwhile, 2% are among those who have received just one dose of the measles, mumps, rubella (MMR) vaccine and 2% are among those who received the required two doses, according to the CDC.
This is a developing story. Please check back for updates.
Angelika Warmuth/picture alliance via Getty Images
(NEW YORK) — Temperatures are beginning to warm up, indicating the arrival of spring — and of allergy season for millions of Americans.
Research shows that allergy seasons may be hitting people harder by starting earlier, lasting longer and creating more pollen.
Growing seasons — the time of year that conditions allow plants to grow — start earlier and last longer than they did 30 years ago, according to a report from the Allergy and Asthma Foundation of America.
Additionally, pollen concentrations have increased up to 21% across North America over the last three decades, data from the USA National Phenology Network shows.
Allergists told ABC News a mix of climate change and more carbon emissions has led to plants in many areas having longer growing seasons and higher pollen counts.
“Research has definitely shown that the seasons are indeed expanding,” Dr. William Reisacher, an otolaryngic allergist at Weill Cornell Medicine and New York-Presbyterian Hospital, told ABC News. “We’re seeing longer pollinating seasons. We’re seeing higher levels of pollen.”
What causes seasonal allergies?
Allergies occur when the immune system views food, medicine, plants or something else as a harmful substance and overreacts.
Some seasonal allergies, also known as allergic rhinitis or hay fever, occur due to pollen, which are tiny grains that are dispersed from certain flowering plants.
“Allergies are essentially your immune system overreacting to things that you’re exposed to in your environment,” Dr. Thanai Pongdee, a consultant allergist-immunologist at Mayo Clinic in Rochester, Minnesota, told ABC News. “So, for example, if you have hay fever and are allergic to tree pollen or grass pollen this time of year, when you breathe that pollen in, your immune system recognizes it and causes a cascade of events where various chemicals get released — one of the main ones being histamine, and these chemicals cause the symptoms that many experience.”
This leads to symptoms including runny nose, sneezing, congestion and itchy, watery eyes, according to the Centers for Disease Control and Prevention.
Reactions can range from mildly annoying symptoms to life-threatening reactions including anaphylactic shock, which can cause multiple organs to fail.
As of 2021, an estimated 25.7% of U.S. adults and 18.9% of U.S. children have seasonal allergies, according to the CDC’s National Center for Health Statistics.
Why are allergy seasons getting longer?
Allergy season typically begins in the spring, around March, and typically ends in the fall, lasting as late as November.
“When we refer to seasonal allergic rhinitis, we are usually referring to allergic symptoms that occupy a certain time of the year,” Reisacher said.
“So, springtime, at least in the northeast, is typically when the trees are pollinating whereas in the summertime, we see the grass is pollinating, and then in the fall, it’s all about the weeds,” he continued. “Ragweed is the most common pollen present at that time of the year.”
However, research has suggested that allergy seasons are getting longer and worse.
“Allergy season is getting longer — in fact it is an average of 13 days longer compared with 20 years ago,” Dr. Purvi Parikh, an allergist and immunologist at NYU Langone Health, told ABC News.
A 2022 study from the University of Michigan found that, by the end of the century, pollen emissions could begin 40 days earlier in the spring than occurred between 1995 and 2014, meaning there could be an additional 19 days of high pollen counts.
Allergists say climate change is one of the biggest reasons why allergy seasons are getting longer.
A 2021 study found human-caused climate change is worsening North American pollen season, causing them to lengthen by 20 days on average between 1990 and 2018.
Reisacher said that as the globe experiences warmer temperatures each year, more storms are occurring, which kicks up more pollen.
“It travels for many more miles on the wind, and it makes it more allergenic, so it gets deeper into our body, into our lungs and even through the tissues that protect our body,” he said.
The warming planet also means that it’s taking longer to see the first frost, which usually occurs in the fall and hold pollen underground, he said. A longer time to get to the first frost means pollen has a longer time to stay in the air.
Reisacher said greenhouse gases are another reason for the longer allergy season. He said more carbon dioxide has been released into the air due to fossil fuels. Plants feed off carbon dioxide, and this has released more pollen into the air.
“There has been a direct correlation between the levels of [carbon dioxide] in the atmosphere and the amount of pollen that plants, including ragweed, are producing,” he said. “So, it’s hard to deny that that is a factor.”
Reisacher and Parikh say this means there will likely be more people who experience seasonal allergies over the next several years.
How to treat seasonal allergies Allergists said there are a number of over-the-counter medications that people can try as well as nasal sprays and rinses.
Some are tailored to relieve symptoms while others are used to prevent symptoms. Additionally, only certain medications work for certain symptoms.
“Start with 24-hour antihistamines. They last longer with fewer side effects,” Parikh said. “[You] can also add nasal steroid or antihistamine sprays as well as eye drops. However, if you aren’t improving, please see an allergist.”
Pongdee said allergy shots may be effective for those who are looking for long-term solutions and are not relief from daily medication.
Reisacher recommends starting medications a few weeks before allergy season starts because they need time to take effect.
He said there are also steps people can take to at home to prevent pollen from coming indoors including keeping windows closed in the early morning when pollination is higher, using air conditioner filters. separating indoor and outdoor clothing and showeing to get pollen off skin and out of hair.
“You want to create a safe haven, and that’s your bedroom,” Reisacher said. “You want to create a pollen-free environment in your bedroom so that at least you have seven or eight hours that your immune system can rest without having to react to pollen.”
Kat Cisar and her six-year-old twins, who attend a Milwaukee school that was found to have hazardous lead in the building. (ABC News)
(MILWAUKEE) — Kat Cisar, a mother of 6-year-old twins, found out in late February that her kids were potentially being exposed to harmful lead paint and dust at their Milwaukee school. By May, their school was on a growing list of eight others across the city, found to have degrading, chipping interiors that were putting children at risk.
Several schools have had to temporarily close for remediation efforts, including the one Cisar’s kids attend.
“We put a lot of faith in our institutions, in our schools, and it’s just so disheartening when those systems fail,” Cisar said.
Milwaukee’s lead crisis began late last year, when a young student’s high blood lead levels were traced back to the student’s school.
Since then, health officials have been combing through other Milwaukee schools to find deteriorated conditions that could harm more children. The plan now is to inspect roughly half of the district’s 106 schools built before 1978 — when lead paint was banned — in time for school to return in the fall. They plan to inspect the other half before the end of the year.
In the last few months, tests have turned up elevated blood lead levels in at least three more students, and the health department expects that number to grow as it continues to offer free testing clinics around the city.
Lead exposure — especially harmful for young children — can cause growth delays, attention disorders and even brain damage, according to the Centers for Disease Control and Prevention (CDC).
Cisar’s own children’s tests for lead levels showed no acute poisoning, but Cisar said they’ll have to keep monitoring it. Her children attended the school for three years.
“When you have little kids who are 3, 4, 5, 6 years old in a classroom like that, that’s worrisome,” she said.
The local impacts of federal cuts
Despite public health officials’ requests, federal help is not coming to Milwaukee — for now. The CDC’s National Center for Environmental Health was gutted on April 1, as part of the Trump administration’s effort to lay off 10,000 employees at the Health and Human Services Department (HHS), which oversees agencies like FDA and CDC.
The cuts included lead exposure experts who were planning to fly to Milwaukee later that month to help the city respond to the situation.
That has complicated the on-the-ground response, Milwaukee Commissioner of Health Mike Totaraitis told ABC News.
“We rely on the federal government for that expertise,” Totoraitis said. “So to see that eliminated overnight was hard to describe, to say the least.”
Erik Svendsen, division director of the CDC’s National Center for Environmental Health before it was eliminated, said the layoffs have left Milwaukee on its own.
“Without us, there is no other unit at the federal level that is here to support them in doing what they need to do,” Svendsen told ABC News.
And not just when it comes to this lead crisis, Svendsen said. Milwaukee — and other cities — won’t have CDC assistance for other environmental threats that affect the buildings people use, the air people breathe and the water they drink, he said.
“States and local public health departments are on their own now as we prepare for the heat, wildfire, algal bloom, tornado, flood and hurricane seasons,” Svendsen said.
An HHS spokesperson told ABC News the CDC’s lead prevention work will be consolidated under a new division under HHS Secretary Robert F. Kennedy Jr. — though Svendsen said he and his team have not been rehired.
Without the experts, Svendsen said the future of the work is still in limbo.
For his part, Totoraitis, the Milwaukee health commissioner, said he empathizes with the frustration expressed by parents — some of whom argue that the issue began at a local level and should be solved there.
“Putting my feet in the parents’ shoes… thinking, ‘Hey, I’m sending my kid to school, it should be safe, it should be free of lead hazards’ — and unfortunately, that’s not what we found,” Totoraitis said.
“We found that systemic issues of poor maintenance and poor cleaning had left countless hazards across multiple schools that really put students at danger,” he said.
But the extent of the problem, Totoraitis said, only furthered his department’s reliance on the experts at the CDC, with whom he said they’d been constantly in contact with for the last few months.
Funding crunch: Hire more teachers or paint a wall?
Buildings in the U.S. built before 1978 can be properly maintained by locking the old paint under layers of fresh new paint. But budget constraints in Milwaukee delayed that upkeep, officials said.
“Underfunding in schools for many, many years has really put districts at a very difficult choice of whether they should have teachers in the classroom and lower class sizes or have a paraprofessional to support — or whether they paint a wall,” said Brenda Cassillius, who started as Milwaukee Public Schools superintendent one month ago.
“And so I think now we are learning and growing,” Cassillius said, to “make sure that we have the resources in place to deal with these really serious infrastructure issues.”
Cisar, whose twins are back at their school after cleanup efforts, said she still feels like there’s lots of blame to go around.
The lack of CDC resources, she said, has only compounded a longstanding issue in Milwaukee. But she said the lack of federal support has been disheartening, nonetheless.
“Maybe that would have just been a little bit of help — but it really sends the message of, ‘You don’t matter,'” she said.
(WASHINGTON) — Bird flu is continuing to spread in animals across the United States more than a year after the first human case was detected.
Since then, at least 70 people have fallen ill and at least one death was recorded in Louisiana, according to the Centers for Disease Control and Prevention.
The number of confirmed cases in humans has held steady for almost two months, but hundreds of dairy cows continue to be infected and raw milk samples in several states have tested positive for bird flu, according to federal health officials.
There is currently no evidence the virus is spreading between people, and the CDC has said the risk to the general public is low. However, some experts told ABC News fear the virus could still mutate or adapt to become more severe or transmissible.
Here’s the latest to know about the virus and current situation.
Bird flu in the U.S.
Bird flu, or avian influenza, is an infectious viral disease that primarily spreads among birds and is caused by infection with Avian Influenza A viruses
In March 2024, bird flu was reported in U.S. dairy cows for the first time. As of Friday, the virus has infected more than 1,000 herds across 17 states, according to the U.S. Department of Agriculture (USDA).
The CDC confirmed the first human case in April 2024 in a Texas dairy worker who was exposed to cows presumed to be infected. This is believed to be the first instance of mammal to human spread of the H5N1 strain.
Bird flu has also been causing outbreaks in poultry, leading to human cases among U.S. poultry farm workers and culling operations workers.
Three human cases have had no known or identifiable exposure to the virus.
Dr. Tony Moody, a professor of pediatrics and in immunology at Duke University School of Medicine, said there has been so much transmission of bird flu in animals that he wonders if mass immunity is far off.
“In terms of the cattle population and other animal reservoirs, I’m starting to wonder exactly how many more cases we’ll see because, at this point, we’re probably heading toward — and pun is intended here — herd immunity,” he told ABC News.
Moody said there is currently no evidence of human-to-human transmission, which he says raises the question of whether or not H5N1 is likely to make that jump.
What is the U.S. doing to fight bird flu?
According to the USDA, the agency is investing $1 billion to fight bird flu, including $500 million for biosecurity measures, $400 million in financial relief for affected farmers and $100 million for vaccine research.
Between March 2024 and now, the CDC said it — along with state and local health departments — have monitored at least 16,600 people exposed to infected animals and tested at least 880. Meanwhile, USDA is responsible for testing livestock herds.
Moody said ramping up testing on both sides would give public health workers better situational awareness.
“I think the real question comes down to: how much do we want to test animals and people in order to be able to nail down transmission events and really understand how frequently this is happening?” Moody said, “I would personally like to see better surveillance and more coordinated surveillance.”
He said he understands this might not be possible due to the allocation of limited resources, but it would provide a better national picture.
“I think that the problem we have right now is that we have an incomplete view because testing of animals falls under one department, testing of people falls under a different department,” Moody said. “They don’t necessarily communicate in real time with accurate information and, the two agencies in question here, they’ve got very different purposes.”
Dr. Dean Blumberg, chief of the division of pediatric infectious diseases at the University of California, Davis Health, said he is worried that there has been a curtailing of testing and surveillance.
“If we don’t have the data then we don’t know what next steps to take,” he told ABC News. “There is increased likelihood that there will be increased spread among animals and humans and, by the time we become aware of increased transmission, then it may be too late for successful mitigation.”Under the USDA’s National Milk Testing Strategy to test raw milk samples for bird flu, the agency has identified at least seven affected states.
Meanwhile, the Food and Drug Administration announced last year it was beginning to sample aged raw cheese to test bird flu, with early results showing most samples were negative.
On the vaccine front, the U.S. has licensed three bird flu vaccines, targeting the H5N1 strain, which are being held in a national stockpile. They are not available to the public and would only be distributed in case of an emergency.
Last year, the World Health Organization it launched an initiative to help accelerate the development of a human bird flu vaccine using messenger RNA (mRNA) technology.
Earlier this year, Moderna was awarded approximately $590 million from the federal government to help speed up the development of an mRNA-based bird flu vaccine, alongside other influenza vaccines.
What we don’t know
Although there is no evidence of human-to-human transmission yet, or that the virus has mutated to become more infectious, Moody said he still worried about mutations and adaptations.
Earlier this year, a dairy cow was found to be infected with another type of bird flu for the first time, which experts have previously said is evidence that the virus is adapting.
“The thing about this virus is that it mutates every time somebody gets infected, right?” Moody said. “We know that there is an intrinsic rate of mutation that the virus has, and as with most mutations, the vast majority … don’t lead to any additional pathogenicity or transmissibility.”
He went on, “But the more cases that you have, whether that is in chickens or cows or people, the more of those random events are occurring and we know that eventually the virus will probably find a way to increase its transmissibility to people or increase some other property that makes it a problem.”
Moody said he is also concerned about reassortment, which is when a hybrid — or recombinant — virus, is formed. An example is an individual getting infected with bird flu and seasonal influenza at the same time and a hybrid virus forming as a result.
He clarified that there is no evidence this has happened yet, and that he believes the U.S. is in a better position to respond today if a pandemic-like situation arises, “but nature has a way of surprising us.”
(WASHINGTON) — Health and Human Services Secretary Robert F. Kennedy Jr. will require new vaccines to undergo placebo testing, marking what a department spokesperson called “a radical departure from past practices.”
The policy change would force vaccines, in order to be approved for human use, to undergo studies in which half of individuals in a study receive a placebo – typically a saline shot – to compare results against the vaccine.
Placebo-controlled trials are already used to test new drugs or vaccines for safety and efficacy, but some experts consider it unethical to conduct such trials when a vaccine or treatment is already considered safe and efficacious. For example, they say, giving half of the kids in a trial a placebo for the measles vaccine when an already proven vaccine exists would put those participants unnecessarily at risk for the virus.
It remains unclear what HHS considers a “new” vaccine and whether that includes the flu and COVID vaccines, which are updated on an annual basis to better protect against currently circulating strains.
“FDA Commissioner Dr. Marty Makary has indicated that significant updates to existing vaccines—such as those addressing seasonal strain changes or antigenic drift—may be considered ‘new products’ requiring additional clinical evaluation,” the department spokesperson told ABC News.
But the spokesperson indicated the yearly flu vaccine might not be affected by the policy, calling it “tried and tested for more than 80 years.”
It appears, instead, that the policy could impact the rollout of future COVID vaccines, which are updated annually.
When asked to elaborate on what the department considers a “new” vaccine, the spokesperson said that federal health agencies would follow the “Gold Standard of Science”.
Kennedy has long questioned the safety of vaccines and argued that placebo-based trials are needed to ensure vaccines aren’t doing more harm than good.
Even as thousands were dying during the COVID-19 public health emergency, COVID vaccines still underwent placebo-controlled studies with more than 100,000 volunteers from diverse populations. Experts say the practice is necessary to determine if a vaccine is not only effective, but also safe.
Many childhood vaccines were originally tested with placebo trials. Others have been available for decades, providing data from millions of people showing those vaccines are overwhelmingly safe and effective.
Once a vaccine for a disease is approved safe and effective, future versions of the shot are tested in clinical trials against the already approved shot. Clinical trials test whether the updated vaccines generate an immune response that’s comparable to or better than previous versions of the vaccine.
Even after vaccines are made available to the public, scientists continue to monitor them for safety. They also review any reports of side effects or reactions and share these facts with the public.
(NEW YORK) — Measles cases in the U.S. have surpassed 900 as outbreaks continue to spread across the county, according to new Centers for Disease Control and Prevention data published Friday.
A total of 935 cases have been confirmed in 29 states including Alaska, Arkansas, California, Colorado, Florida, Georgia, Hawaii, Illinois, Indiana, Kansas, Kentucky, Louisiana, Maryland, Michigan, Minnesota, Missouri, Montana, New Jersey, New Mexico, New York, Ohio, Oklahoma, Pennsylvania, Rhode Island, Tennessee, Texas, Vermont, Virginia and Washington.
At least six states including Indiana, Kansas, Michigan, New Mexico, Ohio and Texas are reporting outbreaks, meaning three or more related cases.
The CDC says 13% of measles patients in the U.S. this year have been hospitalized, the majority of whom are under age 19.
Among the nationally confirmed cases, CDC says about 96% are among people who are unvaccinated or whose vaccination status is unknown.
Meanwhile, 2% are among those who have received just one dose of the measles, mumps, rubella (MMR) vaccine and 2% are among those who received the required two doses, according to the CDC.
Dr. Conrad Fischer, chief of infectious diseases at One Brooklyn Health in New York City, told ABC News he is concerned about the growing number of cases in the U.S.
“This is a disease that was at the level of complete eradication; this should not be happening,” he said. “It’s very sad to have an enormously safe vaccine that has been used in billions of people and to have a sort of cultural societal amnesia about what these illnesses were like in the past.”
In the decade before the measles vaccine became available, the CDC estimates that 3 to 4 million in the U.S. were sickened by measles every year, about 48,000 were hospitalized and about 400 to 500 people died. About 1,000 people suffered encephalitis, which is swelling of the brain.
Measles was declared eliminated from the U.S. in 2000 due to a highly effective vaccination program, according to the CDC. But vaccination rates have been lagging in recent years, leading to an increase in cases.
In Texas, where an outbreak has been spreading in the western part of the state, at least 663 cases have been confirmed as of Tuesday, according to the Texas Department of State Health Services.
Meanwhile, officials in Denton County — in the eastern part of the state outside Dallas and Fort Worth — reported its first measles case this week in a patient who attended a Texas Rangers game.
The infected individual, an adult with unknown vaccination status, visited Globe Life Field and a handful of restaurants and other locations, Denton officials said.
Additionally, Chicago reported its first measles cases this week, one in a suburban Cook County resident with unknown vaccination status and another in an adult Chicago resident who traveled internationally and received one dose of the MMR vaccine, according to the Chicago Department of Public Health and Cook County Department of Public Health.
It comes as a WHO report this week found that cases in the Americas are 11 times higher this year than they were at the same time last year.
Six countries, including the U.S., Canada, Mexico, Argentina, Belize and Brazil, have reported a total of 2,318 cases so far this year. Last year had 205 cases at the same time.
Fischer said measles is not a benign virus and can cause serious complications, especially among vulnerable individuals such as young children and immunocompromised people.
“Measles has a chance to literally destroy your brain, to cause pneumonia, ear infections and, although it is only fatal in a relatively small number of people, it spreads so amazingly easily that even if it’s only a few percentages, it’s something extremely dangerous,” he said.
Fischer emphasized that measles is the most contagious infectious disease known to humans, even compared to other dangerous diseases like tuberculosis.
“For instance, tuberculosis will spread only to two or 3% of the people exposed,” he said. “But if you are not vaccinated and you’re exposed to someone with measles, you have a 90% chance of getting that infection.”
Dr. Whitney Harrington, a physician in the division of infectious diseases at Seattle Children’s Hospital, told ABC News the U.S. is at risk of measles becoming endemic again unless vaccination rates increase.
The CDC currently recommends that 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, the CDC says.
“We really know that vaccines are the single most important public health intervention for preventing infectious disease,” Harrington said. “And we know that they’ve dramatically decreased really the number of cases and the severity of cases of many infections, including measles.”
She encouraged parents who have not vaccinated their children yet to speak with a doctor or a health care provider about vaccination and the benefits of vaccination.
ABC News Youri’ Benadjaoud contributed to this report.
(FORT LAUDERDALE, Fla.) — A case of active tuberculosis has been confirmed at a Florida high school, according to state health officials.
The Florida Department of Health in Broward County (DOH-Broward) identified the infected individual, who was recently on campus at Dillard High School in Fort Lauderdale, John J. Sullivan, chief of communications and legislative affairs for Broward County Public Schools (BCPS), told ABC News in a statement.
“In collaboration with DOH-Broward, Broward County Public Schools has identified and notified individuals who may have been in close contact. With parental consent, DOH-Broward will be on-site to provide testing. Impacted students and staff have been directly contacted,” the statement read.
Additionally, the school principal sent a letter to the community on Tuesday, making them aware of the case, BCPS told ABC News.
“No further action is needed unless you are contacted directly. Once again, if you have not been contacted directly or your child has received a letter to present to you, there is no action required at this time,” the letter read, in part. “We certainly thank you for your understanding as we continue to navigate through this.”
It’s unclear if the individual is a student, faculty member or staff member.
It comes after Kansas health officials and the Centers for Disease Control and Prevention said the state experienced one of the largest recorded tuberculosis outbreaks in U.S. history earlier this year.
Tuberculosis (TB) is a disease caused by a type of bacteria called Mycobacterium tuberculosis, according to the CDC. It is one of the world’s leading infectious disease killers, the federal health agency says.
TB is spread in the air from one person to another. When a person with TB coughs, speaks or sings, germs are expelled into the air — where they can linger for several hours — before another person breathes in the air and becomes infected.
Signs and symptoms include a cough that lasts for three weeks or longer, coughing up blood or phlegm, chest pain, weakness, fatigue, weight loss, loss of appetite, fever, chills and night sweats, according to the CDC.
Some people become infected with TB germs that live in the body for years without causing illness. This is known as inactive TB or latent TB.
People with inactive TB do not feel ill, do not have symptoms and cannot spread germs to other people, the CDC says. However, without receiving treatment, people with inactive TB can develop an active infection.
Last year, the U.S. saw more than 8,700 cases of TB, according to CDC data. Although TB cases have been steadily declining since the mid 1990s, rates increased in 2021, 2022 and 2023, with 2023 matching pre-pandemic levels.
There are several treatment regimens for TB disease that may last anywhere from four months to nine months depending on the course of treatment. Health care providers may consider specific regimens for patients with co-existing medical conditions such as diabetes or HIV.
A vaccine, known as Bacille Calmette-Guérin (BCG), is commonly given to children in countries where TB is common, although it is generally not recommended in the U.S. due to the low risk of infection with the bacteria, variable vaccine effectiveness among adults, and the vaccine’s potential interference with TB tests, the CDC notes. The BCG vaccine often leaves a scar where the recipient was given the shot.
Raquel Natalicchio/Houston Chronicle via Getty Images
(NEW YORK) — Measles cases are continuing to spread throughout the U.S. with outbreaks in at least six states.
Public health experts have previously said lagging vaccination rates are to blame for the rise in cases, at least partly due to vaccine hesitancy and vaccine fatigue left over from the COVID-19 pandemic.
However, even a small uptick in MMR (measles, mumps and rubella) vaccination could prevent millions of infections, according to new research.
The study, published in JAMA last week, used a model to simulate the spread of vaccine-preventable infectious diseases across the U.S., evaluating different scenarios with different vaccination rates over a 25-year period.
The Centers for Disease Control and Prevention (CDC) currently recommends that people receive two vaccine doses — the first at 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, the CDC says. Most vaccinated adults don’t need an additional dose.
At current vaccination rates, the model predicts measles could once again become endemic — constantly present — in the U.S. with an estimated 851,300 cases over 25 years. If vaccination rates decline by just 10%, the model estimates 11.1 million cases of measles over 25 years.
CDC data show vaccination rates have been lagging in recent years. During the 2023 to 2024 school year, 92.7% of kindergartners received the MMR vaccine, according to data. This is lower than the 93.1% seen the previous school year and the 95.2% seen in the 2019 to 2020 school year, prior to the COVID-19 pandemic.
“That result — that we’re already at this tipping point for measles in the U.S. — was a really striking finding that somewhat surprised us as well,” Dr. Nathan Lo, study co-author and an infectious diseases physician at Stanford Medicine, told ABC News.
“We continue to see measles outbreaks, but, by doing the study … you start to crystallize that result that even under the current levels of vaccine decline, there is a very feasible scenario where, over time, our country has measles return where it’s a common household disease again.”
Dr. William Schaffner, a professor of preventive medicine at Vanderbilt University Medical Center in Nashville, who was not involved in the study, said the findings are a “well-thought-out worst-case scenario.”
“I’m not entirely sure that would actually happen because … the general level of vaccination remains pretty high, but there are pockets of unvaccinated children, and what you’re seeing now is the fact that this virus has been reintroduced several times from other parts of the world,” he told ABC News. “I think it’s a bit of a worst-case scenario but, as a worst-case scenario, it’s scary and, in that sense, reasonable.”
However, the model estimated that just a 5% increase in vaccination would lead to only 5,800 cases over the same 25-year period.
This is because when more than 95% of people in a community are vaccinated, most are protected from measles through community immunity, also known as herd immunity, according to the CDC.
“My hope is that this study can provide that data to parents to say, ‘This is the benefit of continuing to vaccinate your child. This is the kind of alternate reality that we’re preventing. And yes, the risks aren’t here right now, but perhaps not too far off,'” Lo said.
Schaffner said there are pockets of the U.S. where MMR vaccination rates are 80% or less and vaccination rates would need to increase substantially in those areas to reduce the number of cases long-term.
However, “if we increase the level of vaccination by a small amount that would reduce the risk of other small outbreaks here and there,” Schaffner said.
The study also found that a 50% drop in vaccinations would lead to an estimated 51.2 million cases over 25 years, but Lo thinks that would only occur if there were a large-scale policy change by the Department of Health and Human Services or the CDC to reduce or remove the childhood vaccine recommendation.
As of Friday, the CDC has confirmed nearly 900 measles cases in at least 29 states. That number is likely an undercount due to delays in states reporting cases to the federal health agency.
In western Texas, an outbreak has been spreading with 663 reported cases of measles, according to new data published Tuesday by the state Department of State Health Services. At least 87 people have been hospitalized over the course of the outbreak.
Measles was declared eliminated from the U.S. in 2000 due to the highly effective vaccination program, according to the CDC. However, an outbreak lasting 12 months or more would threaten to end measles elimination status in the U.S. The Texas outbreak began in January of this year.
To drive vaccination rates up, Lo and Schaffner recommend that parents who haven’t vaccinated their children yet speak to their pediatrician to address their concerns.
“We have to provide recommendations and let people know the facts that these vaccines are very effective and that they are safe,” Schaffner said. “But we have to do more to try to reach out and provide reassurance, and this has to be done very much on a local basis.”
For example, when it comes to the community affected in Texas, Schaffner said they need local influencers they trust to turn to.
“Speak with your local physician, health care provider, the person who cares for your children,” Schaffner said. “Have a conversation with them, and that’s our best hope for regaining some of this trust which public health had and which has slipped away.”
