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California sees the most measles cases in 7 years as disease resurges nationwide

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California sees the most measles cases in 7 years as disease resurges nationwide

California in 2026 has already seen its highest number of annual measles cases in seven years, health officials said, amid an ongoing resurgence of a notoriously infectious disease once considered effectively eliminated in the United States.

The looming new domestic beachhead for the disease comes as vaccination rates have tumbled nationwide in recent years — in some areas falling well below the herd immunity threshold experts say is necessary to keep it from spreading.

“There are pockets of vulnerability, like in communities, that can really lead to outbreaks going wild,” said Dr. Peter Chin-Hong, a UC San Francisco infectious diseases expert.

So far this year, there have been at least 40 confirmed measles cases in California. That’s well above the 25 recorded in all of 2025, according to Dr. Eric Sergienko, chief of the state Department of Public Health’s communicable disease control division. It’s also already the state’s highest single-year tally since 2019, when there were 73.

The latest measles case was announced Wednesday: an infant from San Francisco who was too young to be vaccinated and picked up the virus during an international trip. It was San Francisco’s first measles case since 2019. (The infant’s family was all vaccinated.)

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The spread of the highly infectious virus is largely occurring among unvaccinated individuals, particularly children and younger adults, state health data show. Of the first 39 measles cases reported this year in California, 95% were among people who were unvaccinated or had an unknown immunization status, and 85% were in individuals under age 20, Sergienko said in a briefing to health professionals this week.

The measles vaccine — usually referred to as MMR, as it also conveys protection against two other once-common childhood illnesses, mumps and rubella — is considered to be 97% effective at preventing illness after getting the recommended two doses, and 93% effective after a single shot. There is a small chance that vaccinated people can still get measles, though they tend to have milder illness, according to the U.S. Centers for Disease Control and Prevention.

It was only a generation ago, in 2000, when the U.S. declared that ongoing transmission of measles had been eliminated — a public health success credited to a robust immunization effort following the disease’s resurgence from 1989 to 1991.

But some experts now fear the U.S. is in danger of allowing the virus to regain a foothold. Nationwide, there have been at least 1,714 confirmed measles cases so far this year, nearing the total of 2,287 reported in all of 2025, according to the CDC.

The number of cases recorded in 2025 was the highest single-year tally since 1991. An overwhelming majority of them, 90%, were linked to an outbreak.

Out of every 10,000 people who get measles, 500 children are statistically likely to get pneumonia, and up to 30 of them could die, Sergienko said.

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Three measles deaths were reported nationally last year — two among unvaccinated school-age children in Texas and one in an unvaccinated adult in New Mexico.

Los Angeles County in September reported the death of a school-age child from a complication of measles. The child had been infected as an infant when they were too young to be vaccinated, and years later developed subacute sclerosing panencephalitis, or SSPE, a fatal disease that targets the brain.

Children typically receive their first MMR dose when they are 12 to 15 months old and the second when they are 4 to 6 years old, according to the CDC.

Babies age 6 months to 11 months and traveling internationally should get a dose, but should still get the standard two-dose series after their first birthday, the CDC says.

There have been three outbreaks fueling the spread of measles in California so far this year: one in Riverside County, involving three people infected in a single family; one in Shasta County, infecting nine people among a church group; and an ongoing outbreak in Sacramento County and neighboring Placer County, Sergienko said.

The outbreak in the Sacramento Valley was first identified in February, when officials reported that an unvaccinated toddler contracted measles after returning from South Carolina — where an outbreak centered in Spartanburg County has been linked to about 1,000 cases, health officials said. It is considered one of the largest outbreaks in the U.S. in more than 30 years.

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Measles was then found in three siblings from a different household in Placer County who had contact with the traveling toddler.

Then, in early March, another measles case was identified in a child from the same community who attended what authorities described as an educational enrichment program, potentially exposing as many as 130 children to the virus, California health officials said. The organizers of the educational program agreed to close their facility temporarily.

L.A. County has reported four measles cases this year so far — all among those who recently traveled internationally. The most recent case involved someone aboard a Singapore Airlines flight that landed at Los Angeles International Airport on Feb. 9.

Orange County has reported a measles case in a young adult who potentially exposed people at a gym and urgent care center in Ladera Ranch, as well as a case in a toddler. They also reported two measles cases among travelers to Disneyland, one on Jan. 22 and the other on Jan. 28.

San Bernardino County reported a measles case in an unvaccinated child traveling from another state. San Diego County said an unvaccinated traveler who lives out of state potentially exposed people while visiting the emergency room of a local hospital in mid-March.

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In the Bay Area, health officials reported a case of measles in a vaccinated Santa Clara County resident who recently returned from international travel, and potentially exposed people at a restaurant in Burlingame on Feb. 23 and Feb. 24.

Measles is one of the most contagious viruses known to humans. It can spread through coughing and sneezing, and remain infectious in the air up to two hours after an infected person has left a room. If infected, an individual will typically begin to show measles symptoms seven to 21 days after exposure.

Officials expect the Sacramento Valley measles outbreak to continue for at least the next few weeks.

“With four new cases coming up over the last week, we anticipate that this outbreak will be going on for at least another incubation period, for 21 days or so, as we look at potentially some undocumented transmission occurring within the impacted community,” Sergienko said Tuesday.

Nationally, measles vaccination rates among kindergartners have been declining. During the 2019-20 school year, 95.2% of children that age were fully vaccinated, but that slipped to 92.5% for the 2024-25 school year — below the herd-immunity target of 95%, according to the CDC.

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The measles vaccination rate for California kindergartners was 96.1% in 2024-25, among the highest in the nation. Some of the states that have undergone big breakouts have rates for kindergartners below the 95% goal — Texas was 93.2%; New Mexico, 94.8%; and South Carolina, 91.2%.

California has sweeping vaccination requirements as a condition of enrollment in public and private schools, as well as daycare centers, with exceptions only for medical reasons. Parents who opt not to vaccinate due to their beliefs can homeschool their children and enroll them in independent study, provided they do not “receive classroom-based instruction.”

But, as a Times story last year noted, California’s laws don’t define what “classroom-based instruction” means, including whether students need to be vaccinated if they attend some in-person classes or school-sanctioned activities like field trips, soccer practice or prom. Opponents of school vaccination requirements are also working to pressure states like California to weaken them.

Anti-vaccine advocates have been emboldened in recent years with the rise of Health and Human Services Secretary Robert F. Kennedy Jr., a longtime vaccine skeptic.

In March 2025, Kennedy issued a statement that noted vaccines’ effectiveness in preventing measles’ spread, but stopped short of outright recommending that parents vaccinate their children.

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Yet as the year went on, Kennedy and the agencies he leads upended the nation’s vaccine delivery system, while publicly sharing misleading and inaccurate information about immunizations.

As recent outbreaks show, measles can spread quickly if it gets into pockets of unimmunized communities, and babies too young to be vaccinated can be at risk for serious illness and death.

One such example was the Disneyland measles outbreak of December 2014 to April 2015, which resulted in 131 cases among Californians, and spread to people in six other states, as well as Canada and Mexico. Among the measles cases in California, at least 12 of those infected were infants too young to be vaccinated.

Measles symptoms don’t usually start with the telltale rash, Sergienko said. The disease begins with a mild-to-moderate fever, then a cough, runny nose and red, watery eyes. It takes two or three days later before tiny white lesions, known as Koplik spots, appear inside the mouth, and an additional fever may spike, with temperatures that can exceed 104 degrees.

A couple of days later, the red measles rash emerges, starting at the hairline and moving downward, Sergienko said.

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Officials urge people who suspect they or their child have measles call their healthcare provider. Healthcare providers are advised to evaluate a suspected measles patient in a way that doesn’t expose other patients to the virus.

Health officials urged people to get up to date on the measles vaccine if they haven’t done so.

“We all need to work together to share the medical evidence, benefits, and safety of vaccines to provide families the information they need to protect children and our communities,” Dr. Erica Pan, director of the California Department of Public Health, said.

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Video: This Parrot Has No Beak, But Is at the Top of the Pecking Order

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Video: This Parrot Has No Beak, But Is at the Top of the Pecking Order

new video loaded: This Parrot Has No Beak, But Is at the Top of the Pecking Order

Bruce, a disabled kea parrot, is missing his top beak. The bird uses tools to keep himself healthy and developed a jousting technique that has made him the alpha male of his group.

By Meg Felling and Carl Zimmer

April 20, 2026

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Contributor: Focus on the real causes of the shortage in hormone treatments

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Contributor: Focus on the real causes of the shortage in hormone treatments

For months now, menopausal women across the U.S. have been unable to fill prescriptions for the estradiol patch, a long-established and safe hormone treatment. The news media has whipped up a frenzy over this scarcity, warning of a long-lasting nationwide shortage. The problem is real — but the explanations in the media coverage miss the mark. Real solutions depend on an accurate understanding of the causes.

Reporters, pharmaceutical companies and even some doctors have blamed women for causing the shortage, saying they were inspired by a “menopause moment” that has driven unprecedented demand. Such framing does a dangerous disservice to essential health advocacy.

In this narrative, there has been unprecedented demand, and it is explained in part by the Food and Drug Administration’s recent removal of the “black-box warning” from estradiol patches’ packaging. That inaccurate (and, quite frankly, terrifying) label had been required since a 2002 announcement overstated the link between certain menopause hormone treatments and breast cancer. Right-sizing and rewording the warning was long overdue. But the trouble with this narrative is that even after the black-box warning was removed, there has not been unprecedented demand.

Around 40% of menopausal women were prescribed hormone treatments in some form before the 2002 announcement. Use plummeted in its aftermath, dipping to less than 5% in 2020 and just 1.8% in 2024. According to the most recent data, the number has now settled back at the 5% mark. Unprecedented? Hardly. Modest at best.

Nor is estradiol a new or complex drug; the patch formulation has existed for decades, and generic versions are widely manufactured. There is no exotic ingredient, no rare supply chain dependency, no fluke that explains why women are suddenly being told their pharmacy is out of stock month after month.

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The story is far more an indictment of the broken insurance industry: market concentration, perverse incentives and the consequences of allowing insurance companies to own the pharmacy benefit managers that effectively control drug access for the majority of users. Three companies — CVS Caremark, Express Scripts and OptumRx — manage 79% of all prescription drug claims in the United States. Those companies are wholly owned subsidiaries of three insurance behemoths: CVS Health, Cigna and UnitedHealth Group, respectively. This means that the same corporation that sells you your insurance plan also decides which drugs get covered, at what price, and whether your pharmacy can stock them. This is called vertical integration. In another era, we might have called it a cartel. The resulting problems are not unique to hormone treatments; they have affected widely used medications including blood thinners, inhalers and antibiotics. When a low-cost generic such as estradiol — a medication with no blockbuster profit margins and no patent protection — runs into friction in this system, the friction is not random. It is structural. Every decision in that chain is filtered through the same corporate profit motive. And when the drug in question is an off-patent estradiol patch that has negligible profit margins because of generic competition but requires logistical investment to keep consistently in stock? The math on “how much does this company care about ensuring access” is not complicated.

Unfortunately, there is little financial incentive to ensure smooth, consistent access. There is, however, significant financial incentive to steer patients toward branded alternatives, or simply to let supply tighten — because the companies aren’t losing much profit if sales of that product dwindle. This is not a conspiracy theory: The Federal Trade Commission noted this dynamic in a report that documented how pharmacy benefit managers’ practices inflate costs, reduce competition and harm patient access, particularly for independent pharmacies and for generic drugs.

Any claim that the estradiol patch shortage is meaningfully caused by more women now demanding hormone treatments is a distraction. It is also misogyny, pure and simple, to imply that the solution to the shortage is for women’s health advocates to dial it down and for women to temper their expectations. The scarcity of estradiol patches is the outcome of a broken system refusing to provide adequate supply.

Meanwhile, there are a few strategies to cope.

  • Ask your prescriber about alternatives. Estradiol is available in multiple formulations, including gel, spray, cream, oral tablet, vaginal ring and weekly transdermal patch, which is a different product from the twice-weekly patch and may be more consistently available depending on manufacturer and region.
  • Consider an online pharmacy. Many are doing a good job locating and filling these prescriptions from outside the pharmacy benefit manager system.
  • Call ahead. Patch shortages are inconsistent across regions and distributors. A call to pharmacies in your area, or a broader geographic radius if you’re able, can locate stock that your regular pharmacy doesn’t have.
  • Consider a compounding pharmacy. These sources can sometimes meet needs when commercially manufactured products are inaccessible. The hormones used are the same FDA-regulated bulk ingredients.

Beyond those Band-Aid solutions, more Americans need to fight for systemic change. The FTC report exists because Congress asked for it and committed to legislation that will address at least some of the problems. The FDA took action to change the labeling on estrogen in the face of citizen and medical experts’ pressure; it should do more now to demand transparency from patch manufacturers.

Most importantly, it is on all of us to call out the cracks in the current system. Instead of repeating “there’s a patch shortage” or a “surge in demand,” say that a shockingly small minority of menopausal women still even get hormonal treatments prescribed at all, and three drug companies control the vast majority of claims in this country. Those are the real problems that need real solutions.

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Jennifer Weiss-Wolf, the executive director of the Birnbaum Women’s Leadership Center at New York University School of Law, is the author of the forthcoming book When in Menopause: A User’s Manual & Citizen’s Guide. Suzanne Gilberg, an obstetrician and gynecologist in Los Angeles, is the author of “Menopause Bootcamp.”

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A renewed threat to JPL as the Trump administration tries again to cut NASA

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A renewed threat to JPL as the Trump administration tries again to cut NASA

NASA recaptured the world’s attention with Artemis II, which took astronauts to the moon and back for the first time in half a century. But the agency’s scientific projects could again be under threat as the Trump administration makes a renewed push to drastically cut their funding — including at the Jet Propulsion Laboratory.

The cuts, proposed in the Trump administration’s 2027 budget request to Congress, would pose further challenges to the already weakened Caltech-managed lab and could be broadly damaging to American efforts to bring back new discoveries from space. They echo last year’s attempt by the administration to slash NASA funding, which Congress rejected.

Though the Artemis project is billed as laying a foundation for a crewed NASA mission to Mars, exploration of the Red Planet is among the endeavors that could be slashed. The rover currently exploring Mars’ ancient river delta and a mission to orbit Venus are among projects with JPL involvement targeted for spending cuts, according to an analysis of the NASA budget proposal by the nonprofit Planetary Society.

“This isn’t [because] they’re not producing good science anymore. There’s no rhyme or reason to it,” said Casey Dreier, chief of space policy at the Planetary Society, which led opposition to the administration’s similar effort to cut NASA funding last year.

Storm clouds hang over the Jet Propulsion Laboratory on Feb. 7, 2024.

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(David McNew / Getty Images)

This time, the administration is asking Congress to cut NASA funding by 23% — including a 46% cut to its science programs, which are responsible for developing spacecraft, sending them into outer space to observe and analyzing the data they send back.

The proposal would cancel 53 science missions and reduce funding for others, according to the Planetary Society analysis. The effort to pare down NASA Science comes amid the Trump administration’s broader effort to cut scientific research across federal agencies.

The plan swiftly drew bipartisan criticism from members of Congress, who rejected the administration’s similar 2026 proposal in January. Republican Sen. Jerry Moran of Kansas, who chairs the Senate appropriations subcommittee that oversees NASA, indicated last week that he would work to fund NASA similarly for 2027, saying it would be “a mistake” not to fund science missions.

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Moran plans to hold a hearing with NASA Administrator Jared Isaacman before the end of April to review the budget request, a spokesperson for his office said. The president’s budget request is an ask to Congress, which ultimately holds the power to allocate funding.

But until Congress creates its own budget, NASA will use the plan as its road map, which could slow grants and contracts. The proposal “still creates enormous chaos and uncertainty in the meantime for critical missions, the scientific workforce, and long-term research planning,” said Rep. Judy Chu (D-Monterey Park), whose district includes JPL.

A NASA spokesperson declined to comment Friday. In the budget request, Isaacman wrote that NASA was “pursuing a focused and right-sized portfolio” for its space science missions in order to align with Trump’s federal cost-cutting goals.

The budget “reinforces U.S. leadership in space science through groundbreaking missions, completed research, and next-generation observatories,” Isaacman wrote.

Jared Isaacman testifies during his confirmation hearing to be the NASA administrator

Jared Isaacman testifies during his confirmation hearing to be the NASA administrator in the Russell Senate Office Building on Capitol Hill on Dec. 3, 2025.

(Anna Moneymaker / Getty Images)

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At JPL — which has for decades led innovation in space science and technology from its La Cañada Flintridge campus — questions had already swirled about the lab’s role in the future of NASA work.

Multiple rounds of layoffs over the last two years, the defunding of its embattled Mars Sample Return mission and a shift by the Trump administration toward lunar exploration and away from the type of scientific work that JPL executes had pushed the lab into a challenging stretch.

It has had a steady stream of employee departures in recent months, and those left have been scrambling to court outside funding from private investors, sell JPL technology to companies and increase productivity in hopes of keeping the lab afloat, according to two former staffers, who requested anonymity to describe the mood inside the lab.

“If we’re not doing science, then what are we doing?” asked one former employee, who recently left JPL after more than a decade there.

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A spokesperson for the lab declined to comment, referring The Times to the budget proposal.

The NASA programs marked for cancellation or cutbacks support thousands of jobs at JPL and other centers, said Chu, who has led a push for increased funding for NASA Science. After last year’s layoffs, JPL “cannot afford to lose more of this expertise,” she said in a statement.

Among the JPL projects that appear to be slated for cancellation are two involving Venus, Dreier said. One, Veritas, is early in development and would give work to the lab for the next several years, he said.

The project would be the first U.S. mission to Venus in more than 30 years, Dreier said, and aims to make a high-resolution mapping of the planet’s surface and observe its atmosphere.

The Perseverance rover, which is on Mars collecting rock and soil samples, could face spending reductions. The budget request proposes pulling some funding from Perseverance to fund other planetary science missions and reducing “the pace of operations” for the rover.

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Though how the Mars samples might get back to Earth is uncertain, the rover is still being used to explore the planet and search for evidence of whether it could have ever been habitable to life.

Researchers hope the tubes of Martian rock, soil and sediment can eventually be brought back to Earth for study. The team has about a half a dozen more sample tubes to fill and the rover is in good shape, said Jim Bell, a planetary scientist and Arizona State University professor who leads the camera team on Perseverance, which works daily with JPL.

He said NASA’s spending proposal put forth “no plan” for the future of the agency’s work.

“Are people just supposed to walk away from their consoles,” Bell asked, “and let these orbiters around other planets or rovers on other worlds — just let them die?”

The NASA document did not clearly show which programs were targeted for cuts and did not list which projects were targeted for cancellation. The Planetary Society and the American Astronomical Society each analyzed the proposal and found that dozens of projects appeared to be canceled without being named in the document.

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Across NASA, other projects slated for cancellation according to the Planetary Society’s analysis include New Horizons, a spacecraft exploring the outer edge of the solar system; the Atmosphere Observing System, a planned project to collect weather, air quality and climate data; and Juno, a spacecraft studying Jupiter.

The administration’s plan also doesn’t prioritize new scientific projects, Bell said, which further jeopardizes long-term job stability and space discovery at centers like JPL.

“We’re going through this long stretch now with very few opportunities to build these spacecrafts,” Bell said. “All of the NASA centers are suffering from the lack of opportunities.”

Last year, the Trump administration proposed to slash NASA’s 2026 funding by nearly half. Instead, Congress approved funding in January that provided $24.4 billion for the agency — a cut of about 29% rather than the proposed 46%. The 2027 budget request asks for $18.8 billion.

Congress kept funding for science missions nearly steady, allocating $7.25 billion for science missions, about a 1% decrease from 2025. The administration had proposed cutting the science investment down to $3.91 billion. This time, the budget requests $3.89 billion.

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Under the Trump administration, NASA has put an emphasis on moon exploration, including this month’s successful Artemis II mission. Isaacman, who defended the proposed cuts on CNN last week, touted the agency’s lunar plans, including a project to build a base on the moon.

The agency has indicated commitment to some existing science missions, including the James Webb Space Telescope, the to-be-launched Nancy Grace Roman Space Telescope, the Dragonfly spacecraft set to launch for Saturn’s moon in 2028, and other projects.

“NASA doesn’t have a topline problem, we just need to focus on executing and delivering world-changing outcomes,” Isaacman said on CNN.

Scientists have urged the government not to choose between funding science and exploration but to keep up investment in both.

“It’s ultimately kind of confusing, especially on the heels of the Artemis II mission,” said Roohi Dalal, deputy director for public policy at the American Astronomical Society. “The scientific community … is providing critical services to ensure that the astronauts are able to carry out their mission safely, and yet at the same time, they’re facing this significant cut.”

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