Bird flu is spreading to more farm animals. Are milk and eggs safe?

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Bird flu is spreading to more farm animals. Are milk and eggs safe?

2024-04-14 00:39 Last Updated At：04-15 19:50

A bird flu outbreak in U.S. dairy cows has grown to affect more than two dozen herds in eight states, just weeks after the nation's largest egg producer found the virus in its chickens.

Health officials stress that the risk to the public is low and that the U.S. food supply remains safe and stable.

“At this time, there continues to be no concern that this circumstance poses a risk to consumer health, or that it affects the safety of the interstate commercial milk supply,” the U.S. Food and Drug Administration said in a statement.

Here’s what you need to know about bird flu and food:

As of Friday, the strain of bird flu that has killed millions of wild birds in recent years has been found in at least 26 dairy herds in eight U.S. states: Idaho, Kansas, Michigan, New Mexico, North Carolina, Ohio, Texas and South Dakota.

The virus, known as Type A H5N1, has been detected in a range of mammals over the last few years, but this is the first time it has been found in cattle, according to federal health and animal agencies. Genetic analysis of the virus does not show that it has changed to spread more easily in people, the U.S. Centers for Disease Control and Prevention said.

Agriculture officials in at least 17 states have restricted imports of dairy cattle from states where the virus has been detected, but, so far, government agencies say it’s had little effect on commercial milk production. Officials believe cows likely have been infected by exposure to wild birds, but said cow-to-cow spread “cannot be ruled out."

Farmers are testing cows that show symptoms of infection, including sharply reduced milk supply and lethargy. Animals that show signs or test positive for illness are being separated from other animals on the farms. The animals appear to recover within two weeks.

U.S. egg producers are watching the situation closely after bird flu was detected in chickens in Texas and Michigan. Millions of birds have been killed, but the FDA said the risk of affected eggs getting into the retail market or causing infections in humans is low because of federal inspections and other safeguards.

Scientists say there’s no evidence to suggest that people can contract the virus by consuming food that’s been pasteurized, or heat-treated — or properly cooked.

“It’s not a food safety concern,” said Lee-Ann Jaykus, an emeritus food microbiologist and virologist at North Carolina State University.

Two people in U.S. have been infected with bird flu to date. A Texas dairy worker who was in close contact with an infected cow recently developed a mild eye infection and has recovered. In 2022, a prison inmate in a work program caught it while killing infected birds at a Colorado poultry farm. His only symptom was fatigue, and he recovered.

Yes, according to food safety experts and government officials.

U.S. producers are barred from selling milk from sick cows and must divert and destroy it. In addition, milk sold across state lines is required to be pasteurized, or heat-treated using a process that kills bacteria and viruses, including influenza.

“We firmly believe that pasteurization provides a safe milk supply,” Tracey Forfa, director of the FDA’s Center for Veterinary Medicine told a webinar audience this week.

The FDA and the CDC are less certain about unpasteurized, or raw, milk sold in many states, saying there’s limited information about the possible transmission of the H5N1 virus in such products.

So far, no herds linked to raw milk providers have reported cows infected with bird flu, but the agencies recommend that the industry not make or sell raw milk or raw milk cheese products made with milk from cows that show symptoms — or are exposed to infected cows.

U.S. health officials have long warned against the risk of foodborne illness tied to raw milk, which the CDC said caused more than 200 outbreaks that sickened more than 2,600 people between 1998 and 2018.

Still, raw milk proponents like Mark McAfee, owner of Raw Farm USA in Fresno, Calif., said the outbreak of H5N1 in commercial cows appears to have spurred higher sales of the products, despite federal warnings.

Only dairy cows, not beef cattle, have been infected or shown signs of illness to date, agriculture officials said.

The largest egg producer in the U.S. temporarily halted operations on April 2 after finding bird flu in its chickens. Cal-Maine Foods culled about 1.6 million laying hens and another 337,000 pullets, or young hens, after the detection.

The company said there was no risk to eggs in the market and that no eggs had been recalled.

Eggs that are handled properly and cooked thoroughly are safe to eat, said Barbara Kowalcyk, director of the Center for Food Safety and Nutrition Security at George Washington University.

“A lot of people like runny eggs. Personally, if I eat an egg, it’s very well cooked,” she said.

Still, Kowalcyk and others cautioned that the situation could change.

“This is an emerging issue and clearly this pathogen is evolving and there’s a lot that we don’t know,” she said. “I do think that everybody is trying to figure it out as quickly as possible.”

The Associated Press Health and Science Department receives support from the Howard Hughes Medical Institute’s Science and Educational Media Group. The AP is solely responsible for all content.

Tension grows on UCLA campus as police order dispersal of large pro-Palestinian gathering

2024-05-02 14:46 Last Updated At：14:50

LOS ANGELES (AP) — Police in riot gear massed on the UCLA campus and ordered a large group of pro-Palestinian demonstrators inside a fortified encampment to leave the area or face arrest late Wednesday, one night after violence instigated by counter-protesters erupted in the same place.

A small city sprang up inside the barricaded encampment, full of hundreds of people and tents on the campus quad. Some protesters said Muslim prayers as the sun set over the campus, while others chanted “we’re not leaving” or passed out goggles and surgical masks. They wore helmets and headscarves, and discussed the best ways to handle pepper spray or tear gas as someone sang over a megaphone.

A few constructed homemade shields out of plywood in case they clashed with police forming skirmish lines elsewhere on the campus. “For rubber bullets, who wants a shield?" a protester called out.

Meanwhile, a large crowd of students, alumni and neighbors gathered on campus steps outside the tents, sitting as they listened and applauded various speakers and joined in pro-Palestinian chants. A small group of students holding signs and wearing T-shirts in support of Israel and Jewish people demonstrated nearby.

The law enforcement presence and continued warnings stood in contrast to the scene that unfolded the night before, when counter-demonstrators attacked the pro-Palestinian encampment, throwing traffic cones, releasing pepper spray and tearing down barriers. Fighting continued for several hours before police stepped in, though no arrests were made. At least 15 protesters suffered injuries, and the tepid response by authorities drew criticism from political leaders as well as Muslim students and advocacy groups.

Ray Wiliani, who lives nearby, said he came to UCLA on Wednesday evening to support the pro-Palestinian demonstrators.

“We need to take a stand for it,” he said. “Enough is enough.”

Elsewhere, police in New Hampshire made arrests and took down tents at Dartmouth College and officers in Oregon came onto the campus at Portland State University as school officials sought to end the occupation of the library that started Monday.

The chaotic scenes at UCLA came just hours after New York police burst into a building occupied by anti-war protesters at Columbia University on Tuesday night, breaking up a demonstration that had paralyzed the school.

An Associated Press tally counted at least 38 times since April 18 where arrests were made at campus protests across the U.S. More than 1,600 people have been arrested at 30 schools.

UCLA Chancellor Gene Block said in a statement that “a group of instigators” perpetrated the previous night's attack, but he did not provide details about the crowd or why the administration and school police did not act sooner.

“However one feels about the encampment, this attack on our students, faculty and community members was utterly unacceptable,” he said. “It has shaken our campus to its core.”

Block promised a review of the night's events after California Gov. Gavin Newsom denounced the delays.

The head of the University of California system, Michael Drake, ordered an “independent review of the university’s planning, its actions and the response by law enforcement.”

“The community needs to feel the police are protecting them, not enabling others to harm them,” Rebecca Husaini, chief of staff for the Muslim Public Affairs Council, said in a news conference on the Los Angeles campus later Wednesday, where some Muslim students detailed the overnight events.

Speakers disputed the university’s account that 15 people were injured and one hospitalized, saying the number of people taken to the hospital was higher. One student described needing to go to the hospital after being hit in the head by an object wielded by counter-protesters.

Several students who spoke during the news conference said they had to rely on each other, not the police, for support as they were attacked, and that many in the pro-Palestinian encampment remained peaceful and did not engage with counter-protesters. UCLA canceled classes Wednesday.

Tent encampments of protesters calling on universities to stop doing business with Israel or companies they say support the war in Gaza have spread across campuses nationwide in a student movement unlike any other this century. The ensuing police crackdowns echoed actions decades ago against a much larger protest movement protesting the Vietnam War.

In Madison, a scrum broke out early Wednesday after police with shields removed all but one tent and shoved protesters. Four officers were injured, including a state trooper who was hit in the head with a skateboard, authorities said. Four were charged with battering law enforcement.

This is all playing out in an election year in the U.S., raising questions about whether young voters — who are critical for Democrats — will back President Joe Biden's reelection effort, given his staunch support of Israel.

In rare instances, university officials and protest leaders struck agreements to restrict the disruption to campus life and upcoming commencement ceremonies.

At Brown University in Rhode Island, administrators agreed to consider a vote to divest from Israel in October — apparently the first U.S. college to agree to such a demand.

The nationwide campus demonstrations began at Columbia on April 17 to protest Israel’s offensive in Gaza, which followed Hamas launching a deadly attack on southern Israel on Oct. 7. Militants killed about 1,200 people, most of them civilians, and took roughly 250 hostages. Vowing to stamp out Hamas, Israel has killed more than 34,000 Palestinians in the Gaza Strip, according to the Health Ministry there.

Israel and its supporters have branded the university protests antisemitic, while Israel’s critics say it uses those allegations to silence opposition. Although some protesters have been caught on camera making antisemitic remarks or violent threats, organizers of the protests, some of whom are Jewish, say it is a peaceful movement aimed at defending Palestinian rights and protesting the war.

Meanwhile, protest encampments elsewhere were cleared by the police, resulting in arrests, or closed up voluntarily at schools across the U.S., including The City College of New York, Fordham University in New York, Portland State in Oregon, Northern Arizona University in Flagstaff, Arizona and Tulane University in New Orleans.

Offenhartz and Frederick reported from New York. Associated Press journalists around the country contributed to this report, including John Antczak, Christopher L. Keller, Lisa Baumann, Cedar Attanasio, Jonathan Mattise, Stefanie Dazio, Jae C. Hong, Colleen Long, Karen Matthews, Sarah Brumfield, Carolyn Thompson, Philip Marcelo, Corey Williams and Felicia Fonseca.