California
California has seen more measles cases this year than all of 2024, sparking concerns
California has already reported more measles cases this year than in all of 2024, a worrisome development that comes as the nation is suffering its largest outbreak of the super-infectious disease in decades.
The extent of the national outbreak has rocketed measles from a back-of-mind issue — one rarely, if ever, encountered by a whole generation of Americans — to a pressing public health concern.
“Measles is completely preventable,” Dr. Elizabeth Hudson, regional chief of infectious diseases at Kaiser Permanente Southern California, told The Times.
The virus is spreading almost universally among people who either haven’t been vaccinated, or whose vaccination status is not known, authorities note. But the MMR shots, so named because they also afford protection against mumps and rubella, has long been in the crosshairs of anti-vaccine activists and skeptics — some of whom are now in charge of shaping U.S. policy regarding childhood immunizations.
There have been 17 cases of measles reported so far this year among California residents, up from the 15 reported all of last year, according to the state Department of Public Health. Doctors have been increasingly on alert for measles, which for decades has been so rare that many physicians haven’t encountered a single case.
Because of that recent rarity, many may be unfamiliar with how readily measles can spread — or the serious symptoms it can cause.
“This is not just a mild childhood disease,” Dr. Erica Pan, director of the California Department of Public Health and state public health officer, said in a recent briefing to doctors.
Measles has a death rate of 1 for every 500 to 1,000 cases, Pan said. Nationwide, more than 145 people have been hospitalized with measles so far this year, federal data show, and many of those hospitalized have needed intensive care.
“This can cause very severe disease — often causes a viral pneumonia that is severe enough to need intensive care,” Pan said.
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Measles is one of the most contagious viruses known to science. It is so infectious you can catch it just by being in a room where an infected person has been — even up to two hours after they left, according to the U.S. Centers for Disease Control and Prevention.
The uptick in confirmed measles cases in California, while still somewhat concerning for local public health officials, pales compared with the significant outbreak that began in Texas earlier this year and has since spread to surrounding states.
Texas has reported at least 750 measles cases; New Mexico, 81; Kansas, 80; North Dakota, 28; and Montana, 23, according to the respective states’ health departments. Michigan has reported 15 cases; Ohio and Illinois, 10, and Arkansas and Indiana, eight.
The overwhelming majority of the measles cases are associated with outbreaks tied to close-knit communities with low rates of vaccination, according to the CDC. Recent outbreaks have occurred in areas with a notable population of certain Mennonite Christian communities, starting last fall in Ontario, Canada, which was linked to a large gathering in New Brunswick; then in Texas and New Mexico in late January; and more recently in the Mexican state of Chihuahua, according to the Associated Press.
The AP reported that officials in Mexico and the U.S. say the outbreaks in their countries match the strain found in Canada.
The CDC says that 95% of this year’s measles cases in the U.S. occurred among people who were either unvaccinated or had an unknown vaccination status. About 29% of cases occurred in children younger than 5, with an additional 37% in those age 5 to 19.
In all, the U.S. has reported 1,227 confirmed measles cases so far this year. That’s already rivaling the highest single-year total seen this century — 1,274 were reported in 2019.
You would have to look back a generation to find a higher total than that: 2,126 cases were reported nationwide in 1992.
“And those are probably an underreporting,” Pan said of this year’s case count. Doctors, she said, have learned that most people affected by the measles outbreaks are reluctant to get themselves or their children tested.
Three measles deaths have been reported so far this year, according to the CDC. Two were Texas school-aged children — both of whom were unvaccinated and had no known underlying health conditions, according to state health officials. The other was an unvaccinated adult in New Mexico who didn’t seek medical care before dying, according to health authorities there.
One death has been reported in Mexico, according to the World Health Organization. That person was also unvaccinated. More than 3,300 confirmed and suspected measles cases have also been reported in Canada so far this year.
One infant, who was infected with measles before being born premature, died in Canada earlier this month, according to Dr. Kieran Moore, the chief medical officer for the province of Ontario. The infant’s mother was not vaccinated.
The infant faced other serious medical complications unrelated to the virus, but measles “may have been a contributing factor in both the premature birth and death,” Moore said in a statement.
This year marks the first time a child has died from measles in the United States since 2003 — and the child in that case had a rare genetic condition that impaired the immune system. It’s also the first time since the 1990s that more than two people have died from measles in the U.S. in a single year.
While most associated with its telltale rash, health officials warn measles can cause symptoms that cross the boundary from discomfort to danger. Measles can cause encephalitis, or inflammation of the brain. And years after contracting measles, people can later develop subacute sclerosing panencephalitis, or SSPE, a rare but fatal complication resulting from a weakened form of the virus remaining in the body, and later infecting the brain.
“This is a really, really unusual time to see this many deaths — and seeing previously healthy children with a vaccine-preventable death in the United States,” Pan said.
Measles can also cause something called “immune amnesia.” “It can actually suppress people’s immune systems for a few years after having that measles infection,” Pan said.
The measles outbreaks in Texas, Kansas and New Mexico are so severe that state health officials are recommending early vaccination in babies as young as 6 months in the hardest-hit counties. Those officials are also recommending a second dose for many children earlier than the typical schedule.
The standard CDC recommendation is that children receive the first of two measles vaccine shots when they turn 1, unless they are traveling internationally, in which case they can get vaccinated at 6 months old.
In California, there is no active measles outbreak, so there’s no recommendation for additional or accelerated vaccine doses, Pan said. Most of California’s measles cases this year have involved people who traveled internationally.
Helping matters is California’s relatively high vaccination rate among kindergartners. For the 2023-24 school year, 96.2% of California’s kindergartners were vaccinated against measles, according to the CDC — one of the higher rates of any state.
The latest figure is down slightly from the 96.5% seen the year earlier, but it remains above the levels seen prior to 2014-15, when a severe measles outbreak linked to Disneyland prompted state legislators to strengthen vaccination requirements for children who attend school.
Experts aim for a 95% vaccination rate for measles to guard against outbreaks.
Today, California’s measles case rate remains much lower than the national rate. But that doesn’t mean the state is invulnerable.
There are settings in which unvaccinated people can cluster together, such as group outings of children who are homeschooled.
Another vulnerable setting can be doctor’s offices. In 2008, an unvaccinated 7-year-old boy returned home to San Diego from a trip to Switzerland, became sick, then went to school and was taken to the pediatrician. Investigators found that measles then spread to 11 other children who were either unvaccinated or too young to be vaccinated — five in his school, four who were in the pediatrician’s office at the same time he was, and both of his siblings.
Among those infected were three infants younger than 1, one of whom was hospitalized for two days, according to a report published by the CDC. Another infant traveled by plane to Hawaii while infectious.
Some California counties also have measles vaccination rates for kindergartners that are below the 95% goal. For the 2023-24 school year, San Diego County’s rate is 94.8%; San Bernardino County’s is 93.5%; Santa Cruz County’s is 91.8%; and Kern County’s is 90.7%.
In 2017, a measles outbreak in Los Angeles County was centered in an Orthodox Jewish community, with a number of patients living in Westside L.A., the Santa Monica Mountains and the San Fernando Valley. In early 2019, California’s biggest measles outbreak was in Butte County, and started after a man visited the Philippines, a country that was then in the midst of a massive outbreak.
The last time measles caused scores of deaths nationwide was in the late 1980s and early 1990s. Between 1989 to 1991, there were about 55,000 cases and more than 130 suspected measles-associated deaths, according to the CDC.
In California, that epidemic was the worst between 1988 and 1991 — with 18,000 cases, 3,500 hospital admissions and 70 deaths reported, according to state health officials. A big problem officials identified at that time was that poor parents could not afford vaccinations for their children. One of the nation’s largest outbreaks in 1989 involved mostly preschool-aged children in Los Angeles.
In light of the outbreak, the CDC’s Advisory Committee on Immunization Practices recommended a second dose of the measles vaccine be given between the ages of 4 and 6. And in the early 1990s, the federal government created the Vaccines for Children program, which funds a number of vaccinations for children with low-income parents. In 2000, officials declared that measles was no longer being continuously transmitted locally in the U.S., and new cases were only found when someone was infected abroad.
L.A. County has recorded four cases of measles so far this year among residents, up from one all of last year. Most of the cases this year were associated with someone who either traveled internationally or to domestic areas suffering community transmission of measles, according to the local Department of Public Health.
There were also two reported cases among non-county residents this year, including an infant traveling through Los Angeles International Airport on a flight from South Korea who was returning home to Orange County.
In 2024, there were six non-L.A. County residents who had measles while traveling through L.A. County; four had traveled through Los Angeles International Airport while infectious.
“With measles cases rising across the country and globally, it’s important for unprotected individuals to consider preventive measures. Immunization provides the best protection. Additionally, anyone who was exposed should monitor for symptoms,” the Orange County Health Care Agency said in a statement to The Times.
Symptoms include fever, rash, cough and red, watery eyes. People can be contagious from about four days before the rash begins through four days afterward.
Those suspecting they have measles should call their medical provider before they go to the doctor’s office to avoid potentially exposing other patients, the Health Care Agency said.
The rash traditionally starts at the hairline and moves its way down the body, according to Pan.
Kaiser has seen one case of measles this past month, which was in the Santa Clarita area, Hudson said. Health officials said people were possibly exposed to the contagious individual at a Costco, Trader Joe’s and Walmart on the afternoon of May 29.
“The MMR vaccine, which protects against measles, mumps, and rubella, has an excellent safety record. Hundreds of millions of children have safely received the vaccine worldwide,” she said in a statement to The Times.
California
Neil Thwaites promoted to ‘Vice President of Global Sales & California Commercial Performance’ for Alaska Airlines and Hawaiian Airlines – Alaska Airlines, Hawaiian Airlines and Horizon Air
Thwaites will lead the strategy and execution of all sales activities for the combined Alaska Airlines and Hawaiian Airlines team. His responsibilities include growing indirect revenue on Alaska’s expanding international and domestic network, as well as expanding Atmos for Business, a new program designed for small- and medium-sized companies.
Thwaites joined Alaska Airlines in January 2022 as regional vice president in California. Since stepping into the role, Thwaites has significantly sharpened the airline’s focus and scale in key markets and communities across the state, strengthening Alaska’s position as we continue to grow in California. He will continue to be based at the company’s California offices in Burlingame. The moves take effect Dec. 13, with Thwaites also continuing to lead his current California commercial planning and performance function in addition to Global Sales.
Prior to Alaska, Thwaites worked in multiple positions within the airline industry, including a decade holding roles in London, New York, and Los Angeles for British Airways (a fellow oneworld member); most recently as ‘VP, Sales – Western USA’, where he was responsible for market development strategy and indirect revenue for both British Airways and Iberia across the western U.S.
Thwaites is originally from the United Kingdom and graduated from the University of Brighton with a double honors degree in Business Administration & Law.
California
Tiny tracker following monarch butterflies during California migration
SAN FRANCISCO (KGO) — When this monarch butterfly hits the sky it won’t be traveling alone. In fact, an energetic team of researchers will be following along with a revolutionary technology that’s already unlocking secrets that could help the entire species survive.
“I’ve described this technology as a spaceship compared to the wheel, like using a using a spaceship compared to the invention of the wheel. It’s teaching us so, so much more,” says Ray Moranz, Ph.D., a pollinator conservation specialist with the Xerces Society.
Moranz is part of a team that’s been placing tiny tracking devices on migrating monarchs. The collaboration is known as Project Monarch Science. It leverages solar powered radio tags that are so light they don’t affect the butterfly’s ability to fly. And they’re allowing researchers to track the Monarch’s movements in precise detail. With some 400 tags in place, the group already been able to get a nearly real time picture of monarch migrations east of the Rockies, with some populations experiencing dramatic twists and turns before making to wintering grounds in Mexico.
“They’re trying to go southward to Mexico. They can’t fight the winds. Instead, some of them were letting themselves be carried 50 miles north, 100 miles north, 200 miles the wrong way, which we are all extremely alarmed by and for good reason. Some of these monarchs, their migration was delayed by two or three weeks.
According to estimates, migrating monarch populations have dropped by roughly 80% or more across the country. And the situation with coastal species here in California is especially dire. Blake Barbaree is a senior scientist with Point Blue Conservation Science. He and his colleagues are tracking Northern California populations now clustered around Santa Cruz.
MORE: Monarch butterflies to be listed as a threatened species in US
“This year, there’s it’s one of the lowest, populations recorded in the winter. And the core zones have been in Santa Cruz County and up in Marin County. So we’ve undertaken an effort to understand how the monarchs are really using these different groves around Santa Cruz by tagging some in the state parks around town,” Barbaree explains.
He says being able to track individual monarchs could help identify microhabitats in the area that help them survive, ranging from backyard pollinator gardens to protected open space to forest groves.
“So we’re really getting a great insight to how reliant they are on these big trees, but also the surrounding area and people’s even backyards. And then along the way around the coast, how they’re transitioning among some of these groves. And we’re looking for some of the triggers for those movements. Right. Why are they doing this and what’s what’s driving them to do that? So those questions are still a little bit further out as we get to analyze some more some more of the data,” he believes.
And that data is getting even more precise. The tags, developed by Cellular Tracking Technologies, can be monitored from dedicated listening stations. But the company is also able to crowdsource signals detected by cellphone networks on phones with Bluetooth connectivity and location access activated. And they’ve also helped develop an app that allows volunteers, citizen scientists, and the general public to track and report Monarch locations themselves using their smartphones.
CEO Michael Lanzone says the initial response has been overwhelming.
MORE: New butterflies introduced in SF’s Presidio after species went extinct in 1940s
“We were super surprised to see 3,000 people download the monarch app. It’s like, you know, but people really love monarchs. There’s something that people just relate to,” says Lanzone who like many staffers at Cellular Tracking Technologies, has a background in wildlife ecology.
A number of groups are pushing to have the monarchs designated nationally as a threatened species. If that ultimately happens, researchers believe the tracking data could help put better protections in place.
“They’re highly vulnerable to, you know, some of the different things that that that we as humans do around using pesticides and also potentially cutting, you know, cutting down trees for various reasons. Sometimes they’re for safety and sometimes it’s, you know, for development. But so having an understanding of how we can do those things more sensibly and protect the places that they need the most,” says Point Blue’s Barbaree.
And it’s happening with the help of researchers, citizen scientists, and a technology weighing no more than a few grains of rice.
The smartphone app is called Project Monarch Science. You can download it for free and begin tracking.
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California
Poisonings from ‘death cap’ mushrooms in California prompt warning against foraging
After a string of poisonings from “death cap” mushrooms — one of them fatal — California health officials are urging residents not to eat any foraged mushrooms unless they are trained experts.
Doctors in the San Francisco Bay Area have blamed the wild mushroom, also called Amanita phalloides, for 23 poisoning cases reported to the California Poison Control System since Nov. 18, according to Dr. Craig Smollin, medical director for the system’s San Francisco division.
“All of these patients were involved with independently foraging the mushrooms from the wild,” Smollin, who is a professor of emergency medicine at the University of California, San Francisco, said at a news conference Tuesday. “They all developed symptoms within the first 24 hours, including nausea, vomiting, diarrhea and abdominal pain.”
Smollin said some of the patients were parts of cohorts that had consumed the same batch of foraged mushrooms. The largest group was about seven people, he said.
All of the patients were hospitalized, at least briefly. One died. Five remain in hospital care. One has received a liver transplant, and another is on a donation list awaiting a transplant, Smollin said. The patients are 1½ to 56 years old.
Mushroom collectors said death cap mushrooms are more prevalent in parts of California this season than in years past, which could be driving the increase in poisonings.
“Any mushroom has years that it’s prolific and years that it is not. … It’s having a very good season,” said Mike McCurdy, president of the Mycological Society of San Francisco. He added that the death cap was one of the top two species he identified during an organized group hunt for fungi last week, called a foray.
In a news release, Dr. Erica Pan, California’s state public health officer, warned that “because the death cap can easily be mistaken for edible safe mushrooms, we advise the public not to forage for wild mushrooms at all during this high-risk season.”
Dr. Cyrus Rangan, a pediatrician and medical toxicologist with the California Poison Control System, said the “blanket warning” is needed because most people do not have the expertise to identify which mushrooms are safe to eat.
Still, he said, “it’s rare to see a case series like this.”
The California Poison Control System said in a news release that some of the affected patients speak Spanish and might be relying on foraging practices honed outside the United States. Death cap mushrooms look similar to other species in the Amanita genus that are commonly eaten in Central American countries, according to Heather Hallen-Adams, the toxicology chair of the North American Mycological Association. Because death caps are not often found in that region, foragers might not realize the potential risk of lookalikes in California, she said.
Anne Pringle, a professor of mycology at the University of Wisconsin-Madison, said there is a litany of poisoning cases in which people misidentify something because their experience is not relevant to a new region: “That’s a story that comes up over and over again.”
Over the past 10 years, mushroom foraging has boomed in the Bay Area and other parts of the country. At the same time, information resources about mushroom toxicity — reliable and otherwise — have proliferated, as well, including on social media, phone apps and artificial intelligence platforms. Experts said those sources should be viewed with skepticism.
Longtime mushroom hunters maintain that the practice can be done safely. McCurdy, who has collected and identified mushrooms since the 1970s, said he bristled at the broad discouragement of foraging.
“No, that’s ridiculous. … After an incident like this, their first instinct is to say don’t forage,” he said. “Experienced mushroom collectors won’t pay any attention to that.”
But McCurdy suggested that people seek expertise from local mycological societies, which are common in California, and think critically about the sources of information their lives may be relying on.
Pringle and McCurdy both said they have seen phone apps and social media forums misidentify mushrooms.
“I have seen AI-generated guidebooks that are dangerous,” Pringle said.
The death cap is an invasive species that originated in Europe and came to California in the 1930s, most likely with imported nursery trees. The mushroom is usually a few inches tall with white gills, a pale yellow or green cap and often a ring around the base of its stalk.
The species is found across the West Coast and the Eastern Seaboard, as well as in Florida and Texas, according to Hallen-Adams, who is also an associate professor of food science at the University of Nebraska-Lincoln.
In California, it typically grows near oak trees, though occasionally pines, too. The mushroom’s body is typically connected to tree roots and grows in a symbiotic relationship with them.
The toxin in death cap mushrooms, called amatoxin, can damage the kidneys, liver and gastrointestinal tract if it is ingested. It disrupts the transcription of genetic code and the production of proteins, which can lead to cell death.
Hallen-Adams said the U.S. Poison Centers average about 52 calls involving amatoxin each year, but “a lot of things don’t get called into poison centers — take that with a grain of salt.”
Amatoxin poisoning is not the most common type from mushrooms, but it is the most dangerous, she added: “90% of lethal poisonings worldwide are going to be amatoxin.”
It takes remarkably little to sicken a person.
“One cubic centimeter of a mushroom ingested could be a fatal dose,” Hallen-Adams said.
Symptoms of amatoxin poisoning often develop within several hours, then improve before they worsen. There is no standard set of medical interventions that doctors rely on.
“It’s a very difficult mushroom to test for,” Rangan said, and “also very difficult to treat.”
One drug that doctors have leaned on to treat some of the California patients — called silibinin — is still experimental and difficult to obtain.
“All of our silibinin comes from Europe,” Hallen-Adams said.
Death cap mushrooms have continued to grow abundantly since their introduction, and Pringle’s research has shown that the species can reproduce bisexually and unisexually — with a mate or by itself, alone — which gives it an evolutionary advantage.
“If Eve can make more of herself, she doesn’t need Adam,” Pringle said. “One of the things I’m really interested in is how you might stop the invasion, how you might cure a habitat of its death caps. And I have no solutions to offer you at the moment.”
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