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As bird flu spreads, so do fears of a ‘nightmare scenario’

An animal caretaker collects a blood sample from a dairy calf
An animal caretaker collects a blood sample from a dairy calf vaccinated against bird flu in a containment building at the National Animal Disease Center research facility in Ames, Iowa, on July 31.
(USDA Agricultural Research Service)

Good morning. Here’s what you need to know to start your day.

Bird flu hits Nevada as its effects remain visible at grocery stores

Susanne Rust hated to say it, but she did:

“I think the H5N1 bird flu outbreak is going to continue to pester us as we move into 2025,” The Times’ environmental health reporter told me in December as I gathered insights from our newsroom to understand what stories they’d be following into the new year.

A trip to the supermarket will confirm that bird flu is indeed pestering us.

Millions of chickens have been killed to limit transmission of the virus. That’s wreaking havoc on the nation’s supply of eggs, as many of you reading this know first-hand (the TikTok videos are wild).

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My local grocery store, eggless on Jan. 25, 2025.
(Ryan Fonseca / Los Angeles Times)

The latest development, Susanne reported this week: a deadly strain of bird flu is infecting dairy cows in neighboring Nevada. Dubbed D1.1, this version of the virus killed a person in Louisiana, severely sickened a teen in Canada and has been causing major die-offs of wild birds in a few eastern states.

“Finding D1.1 in dairy cows caught investigators off-guard, but it is also just the latest surprise as the H5N1 bird flu continues to flummox researchers and public health officials,” she wrote. “It’s a stark reminder that this virus does not behave like a ‘typical’ flu virus.”

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John Korslund, a former USDA scientist, didn’t mince words as he explained the current situation to Susanne via email.

“This is truly a ‘s— show’ unfolding into a nightmare scenario,” Korslund wrote. “We have no idea how widespread this version of the virus already is in cattle herds. Every time poultry flocks break [with virus] we’ll need to investigate cattle contacts [which are many] as well as wild bird and other poultry contacts.”

Researchers are facing many unanswered questions as they try to understand the virus’ impacts, including how it could affect the dairy industry, other livestock animals and humans that are in close contact with those animals, and the likelihood of more “spillover events” from wild birds into cattle.

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Cows are milked at Mavro Holsteins dairy farm in Lakeview, Calif.
(Luis Sinco / Los Angeles Times)

How bad is it?

The U.S. Centers for Disease Control has recorded 67 human infections and one death through January. More than half of human cases were in California and all but two were dairy workers.

Although there are no confirmed person-to-person infections so far, Susanne previously reported on research that indicates the strain currently affecting dairy cows is one mutation away from becoming easily transmitted between humans.

Data from the U.S. Department of Agriculture show 32 new confirmed cases of H5N1 infections among cows at dairy facilities in the state last month and more than 736 cases in total during the outbreak. That represents nearly 77% of cases nationwide.

More than 100 commercial chicken farms in California have experienced infections, affecting more than 23 million birds, according to USDA data through Feb. 3. Nationwide, nearly 30 million birds have been affected.

In December, Gov. Gavin Newsom declared a state of emergency amid rising cases, “to ensure government agencies have the resources and flexibility they need to respond quickly to this outbreak.”

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A chicken's beak is held open by two hands in rubber gloves
A California Department of Food and Agriculture technician performs tests on chickens in Sylmar.
(Damian Dovarganes / Associated Press)

How is the federal government responding?

That’s mostly TBD.

Shortly after retaking office, President Trump shut down the Biden-era White House Office of Pandemic Preparedness and ordered federal health agencies to “pause” all public communication. That included halting studies CDC researchers planned to release pertaining to bird flu.

Infectious-disease experts are concerned that the administration’s actions will hamper the government’s ability to provide timely information about the spread of the virus. Susanne spoke with some who worried about economic and social isolation if the virus continues its spread.

“Other nations may begin to question the health and safety of exported agricultural products, such as dairy, livestock, poultry and meat, as well the health of Americans who want to travel internationally,” Susanne explained.

You can read her latest reporting here.

Today’s top stories

California Atty. Gen. Rob Bonta at a news conference
California Atty. Gen. Rob Bonta, shown at a news conference last year, sent a letter Wednesday to Children’s Hospital Los Angeles after the hospital said it was pausing the initiation of hormonal therapy for transgender youth.
(Paul Kuroda/For The Times)
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California’s attorney general has become the face of California’s legal resistance to the second Trump administration

Trump’s tariffs could reshape one of retail’s most booming sectors: fast fashion

  • Hefty taxes on imports from the U.S.’ biggest trading partners have been averted at least temporarily by Mexico and Canada, but not China, which had an additional 10% tariff imposed on its goods this week.
  • Included in Trump’s China gambit was a decision to close a decades-old trade loophole that had allowed lower-cost items to skirt existing tariffs.
  • That could change the landscape of online shopping, particularly for the Chinese e-commerce companies behind wildly successful sites such as Shein and Temu.

What else is going on


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Commentary and opinions

This morning’s must reads

A young Black man leans against a wall looking off in the distance.
“We gon’ stick together. We gon’ get through this. We gon’ build it from the ground up if we have to and restore our community,” says Jacobi Law, 16.
(Christina House/Los Angeles Times)

‘Everybody around here lost something’: How teens are coping after the Eaton fire. As the community starts to grapple with how to rebuild, we wanted to hear from young people. Youth, ranging from 11 to 18, shared with us how their lives have changed, what they are worried about and what’s keeping them optimistic about the future.

Other must reads

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How can we make this newsletter more useful? Send comments to [email protected].


For your downtime

Assorted cheese on shelving inside a glass case
(Jennelle Fong)

Going out

Staying in

A question for you: What’s a piece of advice that changed your life?

Mayra Fernández de Schäfer writes: “As a teenager, growing up in Guatemala, I used to have an opinion on almost everything happening in the neighborhood. Once, as I pondered over someone’s ongoing crisis with a relative, my mother, almost casually, said: ‘No hay que sudar calenturas ajenas’ (you don’t have to sweat other people’s fevers), which taught me not to judge based on assumptions and also to mind my own business.”

Email us at [email protected], and your response might appear in the newsletter this week.

And finally ... from our archives

Arthur Ashe at Wimbledon in 1975.
Arthur Ashe holds his Wimbledon trophy cup after defeating fellow American Jimmy Connors in the final match of the men’s singles championship at the All England Lawn Tennis Championship at Wimbledon in 1975.
(AP / Shutterstock)
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On Feb. 6, 1993, tennis champion Arthur Ashe — the only Black man to win Wimbledon — died of pneumonia, a complication of AIDS. He said he had contracted the disease from an unscreened blood transfusion during his second open-heart surgery in 1983. Former Times sports writer Steve Springer wrote about Ashe’s wins on and off the court.

Have a great day, from the Essential California team

Ryan Fonseca, reporter
Defne Karabatur, fellow
Andrew Campa, Sunday reporter
Kevinisha Walker, multiplatform editor
Hunter Clauss, multiplatform editor
Christian Orozco, assistant editor
Stephanie Chavez, deputy metro editor
Karim Doumar, head of newsletters

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