outbreak

Measles quickly spreading in Kansas counties with alarmingly low vaccination

health, Infectious disease, kansas, measles, MMR, Oklahoma, outbreak, texas, vaccines, virus / Mike M. / March 27, 2025

The cases in Kansas are likely part of the mushrooming outbreak that began in West Texas in late January. On March 13, Kansas reported a single measles case, the first the state had seen since 2018. The nine cases reported last week had ties to that original case.

Spreading infections and misinformation

On Wednesday, KDHE Communications Director Jill Bronaugh told Ars Technica over email that the department has found a genetic link between the first Kansas case and the cases in West Texas, which has similarly spread swiftly in under-vaccinated communities and also spilled over to New Mexico and Oklahoma.

“While genetic sequencing of the first Kansas case reported is consistent with an epidemiological link to the Texas and New Mexico outbreaks, the source of exposure is still unknown,” Bronaugh told Ars.

Bronaugh added that KDHE, along with local health departments, is continuing to work to track down people who may have been exposed to measles in affected counties.

In Texas, meanwhile, the latest outbreak count has hit 327 across 15 counties, mostly children and almost entirely unvaccinated. Forty cases have been hospitalized, and one death has been reported—a 6-year-old unvaccinated girl who had no underlying health conditions.

On Tuesday, The New York Times reported that as measles continues to spread, parents have continued to eschew vaccines and instead embraced “alternative” treatments, including vitamin A, which has been touted by anti-vaccine advocate and current US Health Secretary Robert F. Kennedy Jr. Vitamin A accumulates in the body and can be toxic with large doses or extended use. Texas doctors told the Times that they’ve now treated a handful of unvaccinated children who had been given so much vitamin A that they had signs of liver damage.

“I had a patient that was only sick a couple of days, four or five days, but had been taking it for like three weeks,” one doctor told the Times.

In New Mexico, cases are up to 43, with two hospitalizations and one death in an unvaccinated adult who did not seek medical care. In Oklahoma, officials have identified nine cases, with no hospitalizations or deaths so far.

Measles quickly spreading in Kansas counties with alarmingly low vaccination Read More »

Measles arrives in Kansas, spreads quickly in undervaccinated counties

health, Infectious disease, kansas, measles, MMR, outbreak, Science, texas, unvaccinated, vaccinated, virus / DJ Henderson / March 22, 2025

On Thursday, the county on the northern border of Stevens, Grant County, also reported three confirmed cases, which were also linked to the first case in Stevens. Grant County is in a much better position to handle the outbreak than its neighbors; its one school district, Ulysses, reported 100 percent vaccination coverage for kindergartners in the 2023–2024 school year.

Outbreak risk

So far, details about the fast-rising cases are scant. The Kansas Department of Health and Environment (KDHE) has not published another press release about the cases since March 13. Ars Technica reached out to KDHE for more information but did not hear back before this story’s publication.

The outlet KWCH 12 News out of Wichita published a story Thursday, when there were just six cases reported in just Grant and Stevens Counties, saying that all six were in unvaccinated people and that no one had been hospitalized. On Friday, KWCH updated the story to note that the case count had increased to 10 and that the health department now considers the situation an outbreak.

Measles is an extremely infectious virus that can linger in airspace and on surfaces for up to two hours after an infected person has been in an area. Among unvaccinated people exposed to the virus, 90 percent will become infected.

Vaccination rates have slipped nationwide, creating pockets that have lost herd immunity and are vulnerable to fast-spreading, difficult-to-stop outbreaks. In the past, strong vaccination rates prevented such spread, and in 2000, the virus was declared eliminated, meaning there was no continuous spread of the virus over a 12-month period. Experts now fear that the US will lose its elimination status, meaning measles will once again be considered endemic to the country.

So far this year, the Centers for Disease Control and Prevention has documented 378 measles cases as of Thursday, March 20. That figure is already out of date.

On Friday, the Texas health department reported 309 cases in its ongoing outbreak. Forty people have been hospitalized, and one unvaccinated child with no underlying medical conditions has died. The outbreak has spilled over to New Mexico and Oklahoma. In New Mexico, officials reported Friday that the case count has risen to 42 cases, with two hospitalizations and one death in an unvaccinated adult. In Oklahoma, the case count stands at four.

Measles arrives in Kansas, spreads quickly in undervaccinated counties Read More »

US measles cases reach 5-year high; 15 states report cases, Texas outbreak grows

health, Infectious disease, measles, outbreak / 9u50fv / March 15, 2025

The US has now recorded over 300 measles cases just three months into 2025, exceeding the yearly case counts for all years after 2019. The bulk of this year’s cases are from an outbreak that erupted in an undervaccinated county in West Texas in late January, which has since spread to New Mexico and Oklahoma.

As of the afternoon of March 14, Texas reports 259 cases across 11 counties, 34 hospitalizations, and one death, which occurred in an unvaccinated 6-year-old girl. New Mexico reports 35 cases across two counties, two hospitalizations, and one death. That death occurred in an unvaccinated adult who did not seek medical treatment and tested positive for the virus posthumously. The cause of death is still under investigation. Oklahoma reports two probable cases linked to the outbreak.

In addition to Texas, New Mexico, and Oklahoma, 12 other states have reported at least one confirmed measles case since the start of the year: Alaska, California, Florida, Georgia, Kentucky, Maryland, New Jersey, New York, Pennsylvania, Rhode Island, Vermont, and Washington. According to the Centers for Disease Control and Prevention, this year has seen three measles outbreaks, defined as three or more related cases.

As of March 13, the CDC reported 301 confirmed cases, which do not include 36 new cases reported today in Texas and two in New Mexico.

“Measles is back”

Since 2000, when health officials victoriously declared measles eliminated from the US thanks to concerted vaccination campaigns, only three other years have had higher tallies of measles cases. In 2014, the country saw 667 measles cases. In 2018, there were 381 cases. And in 2019—when the country was on the verge of losing its elimination status—there was a startling 1,274 cases, largely driven by massive outbreaks in New York. Measles is considered eliminated if there is no continuous spread in the country over the course of at least 12 months. (This is not to be confused with “eradication,” which is defined as “permanent reduction to zero of the worldwide incidence” of an infectious disease. Smallpox and rinderpest are the only pathogens humans have eradicated.)

US measles cases reach 5-year high; 15 states report cases, Texas outbreak grows Read More »

Texas measles outbreak spills into third state as cases reach 258

health, Infectious disease, measles, MMR, New Mexico, Oklahoma, outbreak, robert f kennedy jr, texas, vaccination / Kelly Newman / March 12, 2025

Texas and New Mexico

Meanwhile, the Texas health department on Tuesday provided an outbreak update, raising the case count to 223, up 25 from the 198 Texas cases reported Friday. Of the Texas cases, 29 have been hospitalized and one has died—a 6-year-old girl from Gaines County, the outbreak’s epicenter. The girl was unvaccinated and had no known underlying health conditions.

The outbreak continues to be primarily in unvaccinated children. Of the 223 cases, 76 are in ages 0 to 4, and 98 are between ages 5 and 17. Of the cases, 80 are unvaccinated, 138 lack vaccination status, and five are known to have received at least one dose of the Measles, Mumps, and Rubella vaccine.

One dose of MMR is estimated to be 93 percent effective against measles, and two doses offer 98 percent protection. It’s not unexpected to see a small number of breakthrough cases in large, localized outbreaks.

Across the border from Gaines County in Texas sits Lea County, where New Mexico officials have now documented 32 cases, with an additional case reported in neighboring Eddy County, bringing the state’s current total to 33. Of those cases, one person has been hospitalized and one person (not hospitalized) died. The death was an adult who did not seek medical care and tested positive for measles only after death. The cause of their death is under investigation.

Of New Mexico’s 33 cases, 27 were unvaccinated and five did not have a vaccination status, and one had received at least one MMR dose. Eighteen of the 33 cases are in adults, 13 are ages 0 to 17, and two cases have no confirmed age.

On Friday, the Centers for Disease Control and Prevention released a travel alert over the measles outbreak. “With spring and summer travel season approaching in the United States, CDC emphasizes the important role that clinicians and public health officials play in preventing the spread of measles,” the agency said in the alert. It advised clinicians to be vigilant in identifying potential measles cases.

The agency stressed the importance of vaccination, putting in bold: “Measles-mumps-rubella (MMR) vaccination remains the most important tool for preventing measles,” while saying that “all US residents should be up to date on their MMR vaccinations.”

US health secretary and long-time anti-vaccine advocate Robert F. Kennedy Jr, meanwhile, has been emphasizing cod liver oil, which does not prevent measles, and falsely blaming the outbreak on poor nutrition.

Texas measles outbreak spills into third state as cases reach 258 Read More »

Texas official warns against “measles parties” as outbreak keeps growing

health, Infectious disease, measles, outbreak, texas, vaccination / Kelly Newman / March 1, 2025

Cook, along with Lubbock’s director of public health, Katherine Wells, said they see no end in sight for the outbreak, which now spans nine counties in Texas, many of which have low vaccination rates. “This outbreak is going to continue to grow,” Wells said, declining to forecast how high the final case count could go after a reporter raised the possibility of several hundred.

So far, 116 of the 146 cases are under the age of 18, with 46 being between the ages of 0 and 4. Only five of the 146 were vaccinated with at least one dose of the Measles, Mumps, and Rubella (MMR) vaccine.

Messaging

On a more positive note, Wells reported that the outbreak has seemed to sway some vaccine-hesitant parents to get their children vaccinated. Just yesterday in Lubbock, over 50 children came into the city’s clinic for measles vaccines. Eleven of those children had vaccine exemptions, meaning their parents had previously gone through the state process to exempt their child from having to receive routine childhood vaccines to attend school. “Which is a really good sign; that means our message is getting out there,” Wells said.

So far in the outbreak, which erupted in late January, messaging about the disease and the importance of vaccination has exclusively come from state and local authorities. The Centers for Disease Control and Prevention only released a brief statement late Thursday, which was not sent through the agency’s press distribution list. It did, however, note that “vaccination remains the best defense against measles infection.”

During a cabinet meeting Wednesday, US Health Secretary and anti-vaccine advocate Robert F. Kennedy Jr. responded to a question about the outbreak, offering a variety of inaccurate information. Kennedy downplayed the outbreak, falsely claiming that “it’s not unusual.” But, this is an unusual year for measles in the US. As epidemiologist Katelyn Jetelina noted on Bluesky, the number of US measles cases this year has already surpassed the total case counts from eight of the previous 15 years. And it is only February.

Texas official warns against “measles parties” as outbreak keeps growing Read More »

Trump admin. fires USDA staff working on bird flu, immediately backpedals

agriculture, bird flu, dairy, H5N1, health, outbreak, poultry, Science, USDA / DJ Henderson / February 20, 2025

Over the weekend, the Trump administration fired several frontline responders to the ongoing H5N1 bird flu outbreak—then quickly backpedaled, rescinding those terminations and attempting to reinstate the critical staff.

The termination letters went out to employees at the US Department of Agriculture, one of the agencies leading the federal response to the outbreak that continues to plague US dairy farms and ravage poultry operations, affecting over 160 million birds and sending egg prices soaring. As the virus continues to spread, infectious disease experts fear it could evolve to spread among humans and cause more severe disease. So far, the Centers for Disease Control and Prevention has documented 68 cases in humans, one of which was fatal.

Prior to Trump taking office, health experts had criticized the country’s response to H5N1 for lack of transparency at times, sluggishness, inadequate testing, and its inability to halt transmission among dairy farms, which was once considered containable. To date, 972 herds across 17 states have been infected since last March, including 36 herds in the last 30 days.

In a statement to Ars Technica, a USDA spokesperson said that the agency views the response to the outbreak of H5N1—a highly pathogenic avian influenza (HPAI)—as a priority. As such, the agency had protected some positions from staff cuts by granting exemptions, which went to veterinarians, animal health technicians, and others. But not all were exempted, and some were fired.

“Although several positions supporting HPAI were notified of their terminations over the weekend, we are working to swiftly rectify the situation and rescind those letters,” the spokesperson said.

The USDA did not respond to Ars Technica’s questions regarding how many employees working on the outbreak were fired, how many of those terminations were rescinded, or how many employees have been reinstated since the weekend.

The cuts are part of a larger, brutal effort by the Trump administration to slash federal agencies, and the cuts have imperiled other critical government and public services. In recent days, several agencies, including the National Institutes of Health, the CDC, the National Science Foundation, and the Department of Energy, among others, have been gutted. At CDC, cuts devastated the agency’s premier disease detectives program—the Epidemic Intelligence Service—members of which are critical to responding to outbreaks and other health emergencies.

Trump admin. fires USDA staff working on bird flu, immediately backpedals Read More »

Measles outbreak in undervaccinated Texas area doubles—again

gaines county, health, measles, outbreak, texas, vaccination rate / Shannon Garcia / February 15, 2025

A measles outbreak in an area of Texas with abysmal vaccination rates continues to mushroom, with cases doubling since Tuesday and expanding into additional counties.

A week ago, officials reported nine confirmed cases in Gaines County, at the border of New Mexico, which has one of the lowest vaccination rates among kindergartners in the state at just about 82 percent. On Tuesday, the cases climbed to 24, all in Gaines. In Friday’s update, the state health department reports that the case count has now reached 48 and spread to three nearby counties, which also have vaccination rates below the 95 percent threshold that prevent vaccine-preventable diseases from spreading onward.

Gaines now reports 42 cases. There’s one case reported in Lynn County to the northeast, which has a 91 percent vaccination rate. Terry County, with a vaccination rate of 94 percent, reports three cases, and Yoakum County, with a vaccination rate of 92.5 percent, reports two cases. Terry and Yoakum are both directly north of Gaines.

As before, all cases are in unvaccinated people or people with unknown vaccination status. Of the 48 cases, 42 are in children, including 13 between the ages of 0 and 4. Thirteen people (27 percent) have been hospitalized.

Measles outbreak in undervaccinated Texas area doubles—again Read More »

Nine unvaccinated people hospitalized as Texas measles outbreak doubles

gaines county, health, Infectious disease, measles, MMR, outbreak, texas, vaccination, vaccines / Beth Washington / February 13, 2025

In an interview with Ars Technica last week, Zach Holbrooks, the executive director of the South Plains Public Health District (SPPHD), which includes Gaines, said that the area has a large religious community that has expressed vaccine hesitancy.

Additional cases likely

Pockets of the county have yet lower vaccination rates than the county-wide averages suggest. For instance, one independent public school district in Loop, in the northeast corner of Gaines, had a vaccination rate of 46 percent in the 2023–2024 school year.

Measles is one of the most infectious diseases known. The measles virus spreads through the air and can linger in the airspace of a room for up to two hours after an infected person has left. Ninety percent of unvaccinated people who are exposed will fall ill with the disease, which is marked by a very high fever and a telltale rash. Typically, 1 in 5 unvaccinated people with measles in the US end up hospitalized, and 1 in 20 develop pneumonia. Between 1 to 3 in 1,000 die of the infection. In rare cases, it can cause a fatal disease of the central nervous system called Subacute sclerosing panencephalitis later in life. Measles can also wipe out immune responses to other infections (a phenomenon known as immune amnesia), making people vulnerable to other infectious diseases.

“Due to the highly contagious nature of this disease, additional cases are likely to occur in Gaines County and the surrounding communities,” the state health department said.

While Gaines is remarkable for its low vaccination rate, vaccination coverage nationwide has slipped in recent years as vaccine misinformation and hesitancy have taken root. Overall, vaccination rates among US kindergartners have fallen from 95 percent in the 2019–2020 school year into the 92 percent range in the 2023–2024 school year. Vaccine exemptions, meanwhile, have hit an all-time high. Health experts expect to see more vaccine-preventable outbreaks, like the one in Gaines, as the trend continues.

Nine unvaccinated people hospitalized as Texas measles outbreak doubles Read More »

Bird flu strain that just jumped to cows infects dairy worker in Nevada

bird flu, CDC, dairy worker, H5N1, health, Infectious disease, outbreak, USDA / Shannon Garcia / February 12, 2025

However, the new Nevada case is notable because it marks the first time D1.1 is known to have jumped from birds to cows to a person. Moreover, D1.1 has proven dangerous. The genotype is behind the country’s only severe and ultimately fatal case of H5N1 so far in the outbreak. The death in the Louisiana case linked to wild and backyard birds was reported last month. The CDC’s statement added that the person had “prolonged, unprotected” exposure to the birds. The D1.1. genotype was also behind a severe H5N1 infection that put a Canadian teenager in intensive care late last year.

In a February 7 analysis, the USDA reported finding that the D1.1 strain infecting cows in Nevada has a notable mutation known to help the bird-adapted virus replicate in mammals more efficiently (PB2 D701N). To date, this mutation has not been seen in D1.1 strains spreading in wild birds nor has it been seen in the B3.13 genotype circulating in dairy cows. However, it was seen before in a 2023 human case in Chile. The CDC said it has confirmed that the strain of D1.1 infecting the person in Nevada also contains the PB2 D701N mutation.

The USDA and CDC both reported that no other concerning mutations were found, including one that has been consistently identified in the B3.13 strain in cows. The CDC said it does not expect any changes to how the virus will interact with human immune responses or to antivirals.

Most importantly, to date, there has been no evidence of human-to-human transmission, which would mark a dangerous turn for the virus’s ability to spark an outbreak. For all these reasons, the CDC considers the risk to the public low, though people with exposure to poultry, dairy cows, and birds are at higher risk and should take precautions.

To date, 967 herds across 16 states have been infected with H5N1 bird flu, and nearly 158 million commercial birds have been affected since 2022.

Bird flu strain that just jumped to cows infects dairy worker in Nevada Read More »

H5N1 bird flu spills over again; Nevada cows hit with different, deadly strain

bird flu, cows, dairy, H5N1, health, Infectious disease, nevada, outbreak, USDA / Kelly Newman / February 6, 2025

The spread of H5N1 bird flu in dairy cows is unprecedented; the US outbreak is the first of its kind in cows. Virologists and infectious disease experts fear that the continued spread of the virus in domestic mammals like cows, which have close interactions with people, will provide the virus countless opportunities to spill over and adapt to humans.

So far, the US has tallied 67 human cases of H5N1 since the start of 2024. Of those, 40 have been in dairy workers, while 23 were in poultry workers, one was the Louisiana case who had contact with wild and backyard birds, and three were cases that had no clear exposure.

Whether the D1.1 genotype will pose a yet greater risk for dairy workers remains unclear for now. Generally, H5N1 infections in humans have been rare but dangerous. According to data collected by the World Health Organization, 954 H5N1 human cases have been documented globally since 2003. Of those, 464 were fatal, for a fatality rate among documented cases of 49 percent. But, so far, nearly all of the human infections in the US have been relatively mild, and experts don’t know why. There are various possible factors, including transmission route, past immunity of workers, use of antivirals, or something about the B3.13 genotype specifically.

For now, the USDA says that the detection of the D1.1 genotype in cows doesn’t change their eradication strategy. It further touted the finding as a “testament to the strength of our National Milk Testing Strategy.”

H5N1 bird flu spills over again; Nevada cows hit with different, deadly strain Read More »

Biofilms, unwashed hands: FDA found violations at McDonald’s ex-onion supplier

E. coli, fda, food safety, health, inspection, mcdonalds, onions, outbreak, taylor farms / DJ Henderson / January 13, 2025

Perhaps most concerning, FDA inspectors noted that employees were never seen washing their hands. Instead, they wore gloves, and if they touched dirty surfaces or items, they would simply put hand sanitizer on their dirty gloves and carry on. What they should have been doing was removing their dirty gloves, washing their hands, and getting clean gloves. However, the FDA inspectors never saw this happen, and managers confirmed that hand sanitizing gloves was common practice.

The inspectors also noted that the facility’s equipment was always wet. Employees applied sanitizing solutions on knives and other equipment used to dice and chop fresh produce. The sanitizing solution is meant to be air-dried before use, but Taylor Farms employees immediately used the equipment—still dripping with sanitizing solution—to cut RTE produce.

On one day of the inspection, FDA agents saw employees chop RTE lettuce with equipment that was wet with sanitizing solution at the maximum concentration, which was 200 ppm. In another instance, the inspectors saw an employee mix cleaning chemicals together to make a sanitizing solution, which the employee said was done “routinely.” When inspectors asked about the mixture, Taylor Farms “could not find the source of this recipe,” nor could they find the manufacturer label or other information stating the mixture was designed for use.

“Highest expectations”

In a statement to CBS, Taylor Farms said that it “immediately took steps to address” the problems found in the FDA’s inspection, which resulted in no “administrative or regulatory action” against the company.

“Taylor Farms is confident in our best-in-class food safety processes, and in turn, the quality and safety of our products,” the company said in the statement. “As is common following an inspection, FDA issued observations of conditions that could be improved at one of our facilities.” The company added that “no illnesses or public health threat has been linked to these observations” in the inspection.

McDonald’s, meanwhile, said it had stopped getting onions from the facility.

“We hold our suppliers to the highest expectations and standards of food safety. Prior to this inspection, and unrelated to its findings, McDonald’s stopped sourcing from Taylor Farms’ Colorado Springs facility,” McDonald’s said in a statement.

Biofilms, unwashed hands: FDA found violations at McDonald’s ex-onion supplier Read More »

Teen in critical condition with Canada’s first human case of H5 bird flu

avian influenza, bird flu, Canada, dairy herds, health, Infectious disease, outbreak, Science / Kelly Newman / November 13, 2024

A British Columbia teen who contracted Canada’s first known human case of H5 bird flu has deteriorated swiftly in recent days and is now in critical condition, health officials reported Tuesday.

The teen’s case was announced Saturday by provincial health officials, who noted that the teen had no obvious exposure to animals that could explain an infection with the highly pathogenic avian influenza. The teen tested positive for H5 bird flu at BC’s public health laboratory, and the result is currently being confirmed by the National Microbiology Laboratory in Winnipeg.

The teen’s case reportedly began with conjunctivitis, echoing the H5N1 human case reports in the US. The case then progressed to fever and cough, and the teen was admitted to BC’s Children’s hospital late Friday. The teen’s condition varied throughout the weekend but had taken a turn for the worse by Tuesday, according to BC provincial health officer Bonnie Henry.

“This was a healthy teenager prior to this—so, no underlying conditions—and it just reminds us that in young people, this is a virus that can progress and cause quite severe illness,” Bonnie Henry said in a media briefing streamed by Global News on Tuesday.

Health officials in the province have opened an investigation to understand the source of the outbreak. Around three dozen contacts of the teen have been tested, and all have been negative. “The source of exposure is very likely to be an animal or bird and is being investigated by BC’s chief veterinarian and public health teams,” health officials noted in the announcement over the weekend. The teen was reportedly exposed to pets, including dogs, cats, and reptiles, but testing so far has been negative on them.

Teen in critical condition with Canada’s first human case of H5 bird flu Read More »