Science
Contributor: Factory farming of fish is brewing pathogens
The federal government recently released new dietary guidelines aimed at “ending the war on protein” and steering Americans toward “real foods” — those with few ingredients and no additives. Seafood plays a starring role. But the fish that health advocates envision appearing on our plates probably won’t be caught in the crystal blue waters we’d like to imagine.
Over the past few decades, the seafood industry has completely revolutionized how it feeds the world. As many wild fish populations have plummeted, hunted to oblivion by commercial fleets, fish farming has become all the rage, and captive-breeding facilities have continually expanded to satiate humanity’s ravenous appetite. Today, the aquaculture sector is a $300-billion juggernaut, accounting for nearly 60% of aquatic animal products used for direct human consumption.
Proponents of aquaculture argue that it helps feed a growing human population, reduces pressure on wild fish populations, lowers costs for consumers and creates new jobs on land. Much of that may be correct. But there is a hidden crisis brewing beneath the surface: Many aquaculture facilities are breeding grounds for pathogens. They’re also a blind spot for public health authorities.
On dry land, factory farming of cows, pigs and chickens is widely reviled, and for good reason: The unsanitary and inhumane conditions inside these facilities contribute to outbreaks of disease, including some that can leap from animals to humans. In many countries, aquaculture facilities aren’t all that different. Most are situated in marine and coastal areas, where fish can be exposed to a sinister brew of human sewage, industrial waste and agricultural runoff. Fish are kept in close quarters — imagine hundreds of adult salmon stuffed into a backyard swimming pool — and inbreeding compromises immune strength. Thus, when one fish invariably falls ill, pathogens spread far and wide throughout the brood — and potentially to people.
Right now, there are only a handful of known pathogens — mostly bacteria, rather than viruses — that can jump from aquatic species to humans. Every year, these pathogens contribute to the 260,000 illnesses in the United States from contaminated fish; fortunately, these fish-borne illnesses aren’t particularly transmissible between people. It’s far more likely that the next pandemic will come from a bat or chicken than a rainbow trout. But that doesn’t put me at ease. The ocean is a vast, poorly understood and largely unmonitored reservoir of microbial species, most of which remain unknown to science. In the last 15 years, infectious diseases — including ones that we’ve known about for decades such as Ebola and Zika — have routinely caught humanity by surprise. We shouldn’t write off the risks of marine microbes too quickly.
My most immediate concern, the one that really makes me sweat, is the emergence of drug-resistant bacteria among farmed fish. Aquaculturists are well aware that their fish often live in a festering cesspool, and so many growers will mix antibiotics — including ones that the World Health Organization considers medically important for people — into fish feed, or dump them straight into water, to avoid the consequences of crowded conditions and prevent rampant illness. It would be more appropriate to use antibiotics in animals only when they are sick.
Because of this overuse for prevention purposes, more antibiotics are used in seafood raised by aquaculture than are used in humans or for other farmed animals per kilogram. Many of these molecules will end up settling in the water or nearby sediment, where they can linger for weeks. In turn, the 1 million individual bacteria found in every drop of seawater will be put to the evolutionary test, and the most antibiotic-resistant will endure.
Numerous researchers have found that drug-resistant strains of bacteria are alarmingly common in the water surrounding aquaculture facilities. In one study, evidence of antibiotic resistance was found in over 80% of species of bacteria isolated from shrimp sold in multiple countries by multiple brands.
Many drug-resistant strains in aquatic animals won’t be capable of infecting humans, but their genes still pose a threat through a process known as horizontal transfer. Bacteria are genetic hoarders. They collect DNA from their environment and store it away in their own genome. Sometimes, they’ll participate in swap meets, trading genes with other bacteria to expand their collections. Beginning in 1991, for example, a wave of cholera infected nearly a million people across Latin America, exacerbated by a strain that may have picked up drug-resistant adaptations while circulating through shrimp farms in Ecuador.
Today, drug-resistant bacteria kill over a million people every year, more than HIV/AIDS. I’ve seen this with my own eyes as a practicing tuberculosis doctor. I am deeply fearful of a future in which the global supply of fish — a major protein source for billions of people — also becomes a source of untreatable salmonella, campylobacter and vibrio. We need safer seafood, and the solutions are already at our fingertips.
Governments need to lead by cracking down on indiscriminate antibiotic use. It is estimated that 70% of all antibiotics used globally are given to farm animals, and usage could increase by nearly 30% over the next 15 years. Regulation to promote prudent use of antibiotics in animals, however, has proven effective in Europe, and sales of veterinary antibiotics decreased by more than 50% across 25 European countries from 2011 to 2022. In the United States, the use of medically important antibiotics in food animals — including aquatic ones — is already tightly regulated. Most seafood eaten in the U.S., however, is imported and therefore beyond the reach of these rules. Indeed, antibiotic-resistance genes have already been identified in seafood imported into the United States. Addressing this threat should be an area of shared interest between traditional public health voices and the “Make America Healthy Again” movement, which has expressed serious concerns about the health effects of toxins.
Public health institutions also need to build stronger surveillance infrastructure — for both disease and antibiotic use — in potential hotspots. Surveillance is the backbone of public health, because good decision-making is impossible without good data. Unfortunately, many countries — including resource-rich countries — don’t robustly track outbreaks of antibiotic-resistant pathogens in farmed animals, nor do they share data on antibiotic use in farmed animals. By developing early warning systems for detecting antibiotic resistance in aquatic environments, rapid response efforts involving ecologists, veterinarians and epidemiologists can be mobilized as threats arise to avert public health disasters.
Meanwhile, the aquaculture industry should continue to innovate. Genetic technologies and new vaccines can help prevent rampant infections, while also improving growth efficiency that could allow for more humane conditions.
For consumers, the best way to stay healthy is simple: Seek out antibiotic-free seafood at the supermarket, and cook your fish (sorry, sushi lovers).
There’s no doubt that aquaculture is critical for feeding a hungry planet. But it must be done responsibly.
Neil M. Vora is a practicing physician and the executive director of the Preventing Pandemics at the Source Coalition.
Science
Amid E. coli outbreak, California-based Raw Farm voluntarily recalls cheddar cheese
Yes, Mark McAfee is pulling his cheese.
No, he is not happy about it.
The U.S. Food and Drug Administration asked McAfee’s Fresno-based Raw Farm weeks ago to voluntarily withdraw its unpasteurized cheese products from the market as the agency investigates an E. coli outbreak that has sickened nine people in three states — seven of them in California.
The U.S. Centers for Disease Control and Prevention has warned the public not to buy, sell or serve the company’s raw cheddar cheese, which five of those who had an E. coli infection say they ate before their illness.
For three weeks, McAfee refused to abide by the government’s wishes. But on Friday he finally relented, saying he has “involuntarily” recalled seven batches of cheese, even though the FDA has yet to confirm that E. coli has been found in any Raw Farm products. The agency has not issued a formal recall, though it has sent out a warning letter telling customers to avoid Raw Farm products purchased on or after Jan. 4, particularly raw milk cheddar cheese.
“This Voluntary Recall is being performed under protest,” the company wrote in an announcement posted Friday by the FDA. “This Voluntary Recall is performed as a path forward.”
McAfee said he tests every batch of milk that comes out of his milking parlors, and none has been positive for E. coli, salmonella, campylobacter, listeria or any other contaminant that causes human illness. He has shared those results with both the FDA and state regulators, he said.
He said the agency came to his farm and “spent nearly a week” reviewing his tests.
“They were very impressed,” he said.
“There’s no pathogenic bacteria correlating us to anybody,” said McAfee. “What they did was a backdoor move. They said, ‘We’ll just let everybody know we’re concerned,’ and that is enough to have stores kick you out.”
The FDA has not yet responded to requests for comment.
Last month, the FDA and CDC announced an investigation into an E. coli outbreak that since September has sickened nine people in California, Florida and Texas, three of whom have been hospitalized. More than half the cases are children aged 5 or younger. One patient required treatment for hemolytic uremic syndrome, a serious kidney complication.
Genome sequencing of E. coli isolated from each patient found that the strains were closely genetically related, suggesting that all of the ill people were exposed to the same source of infection.
State and local public health officials were able to interview eight patients or their caregivers. All said they’d consumed raw dairy products before falling ill. Two whose illness started in late 2025 said they drank Raw Farm’s raw milk, and five who fell sick in 2026 had eaten the company’s raw cheddar. (The eighth couldn’t recall the brand of the raw milk they drank.)
While testing of retail samples of Raw Farm cheese on sale in March found no E. coli, California has not ruled out the farm as the outbreak’s source given the number of patients who consumed its products before infection, a California Department of Public Health spokesperson said.
“Retail cheese samples collected do not represent all raw cheese products sold by Raw Farm and may have been from different lots of production than those consumed by ill persons,” the agency said in a statement. “CDPH considers Raw Farm raw dairy the source of the outbreak based on this strong epidemiologic data, despite the negative laboratory testing results from a limited sample of retail products.”
Raw, or unpasteurized, dairy has not undergone the heating process that kills harmful bacteria while leaving nutrients largely intact. Raw Farm’s products alone have been associated with at least 239 reported cases of food poisoning since 2006, including a salmonella outbreak in October 2024 that sickened 171 people, according to Bill Marler, a food safety lawyer with Seattle-based MarlerClark.
He said the FDA’s decision to send out a warning letter instead of issuing a recall is “completely normal,” and the agency is very conservative when it comes to food safety.
“It makes sense, under the circumstances, to pull the product from the shelves,” he said of grocery stores. “Hell, if I was a retailer, I would pull it, because the last thing you’d want to do is have the product on the shelf, have it test positive for some E. coli, and have it poison some little kid and who then gets kidney failure.”
Proponents of raw dairy have long insisted that it prevents allergies and promotes beneficial bacteria, claims that are not supported by research. They include U.S. Health and Human Services Secretary Robert F. Kennedy Jr., a longtime fan who celebrated the release of the 2025 “MAHA Report” with a shot of raw milk.
McAfee was among those hopeful that Kennedy’s tenure would usher in a more favorable regulatory environment for raw dairy producers. But despite having been contacted by Kennedy surrogates before Trump’s second inauguration, he’s not heard from them since.
He said the administration has done little to promote raw dairy as part of a revamped food policy that emphasizes meat and whole-fat milk as essential for a healthy diet.
The FDA’s webpage about raw dairy was last updated during the Biden administration, and cautions people to avoid raw milk products and dispels research claiming it is healthy.
“They fired their best people at FDA and hired some good people and weird people and whatever,” McAfee said. “It’s so emblematic of a three-ring circus. The entire freaking administration is showing that through their lack of consistency, the lack of policy adherence, they just do what the hell they want to do.”
What has changed under the new administration is the FDA’s ability to carry out investigations like the one it says it has initiated at Raw Farm. Inspections, lab work and outbreak investigations are among the agency functions most hindered by significant staff reductions that have taken place since Trump took office, industry experts have warned.
The Department of Health and Human Services has lost 18,200 employees since Trump took office, according to the Department of Personnel Management’s Federal Workforce Data tool. More than 3,000 of those losses were at the CDC, and about 4,500 were at the FDA.
Science
Diablo Canyon nuclear power plant gets final go-ahead to run through 2030
The federal Nuclear Regulatory Commission on Thursday renewed Diablo Canyon’s license to operate, ensuring that California’s last remaining nuclear facility will continue to run through at least 2030.
The plant was originally slated to close in 2025, but lawmakers extended the deadline by five years in 2022, citing ongoing need for power from a plant that provides more than 8% of the state’s electricity.
The approval from the body that regulates nuclear reactors and waste marks the final hurdle in Pacific Gas & Electric’s multiyear journey to gather the necessary state and federal permits to keep its facility online.
In December, PG&E received a key permit from the California Coastal Commission by agreeing to give up 12,000 acres of nearby land for conservation in exchange for the loss of marine life caused by the plant’s operations.
Another key step took place in February when the Central Coast Regional Water Board approved waste discharge permits for the plant and granted a certification under the Clean Water Act, the last step required before the Nuclear Regulatory Commission could issue its final approval.
The license renewal from the commission allows the plant to remain running for 20 years, although extending it past 2030 would require additional action from the California Legislature.
“Today’s milestone reminds us that when discipline, science, responsibility and vision all come together, we can build an energy future that is both sustainable and secure,” said NRC Office of Nuclear Reactor Regulation acting Director Jeremy Groom at a signing ceremony.
Already this year some lawmakers and regulators have expressed interest in extending the plant’s life through 2045, citing growing electricity demand and the plant’s central role in helping the state meet its climate goals by providing carbon-free power to the grid.
Groups that oppose the plant want to make sure that doesn’t happen. Last week, the California Coastkeeper Alliance filed a petition asking the State Water Resources Control Board to throw out the facility’s water discharge permit. The group alleged that the Central Coast Regional Water Board illegally allowed the facility to continue operating without technology required under the federal Clean Water Act to protect marine life.
Other groups have petitioned the board to limit Diablo Canyon’s Clean Water Act certificate to 2030, rather than 2045.
Science
Video: How the Artemis Astronauts Plan to Live in Space for 10 Days
new video loaded: How the Artemis Astronauts Plan to Live in Space for 10 Days
transcript
transcript
How the Artemis Astronauts Plan to Live in Space for 10 Days
On the Artemis II mission, four astronauts will work, exercise and sleep in a capsule that is about the size of two minivans for 10 days. In April 2025, National Geographic worked with NASA to film the astronauts at an Orion space capsule model in Houston.
-
“Did y’all really get dibs on spots?” “She thinks.” “I know.” “Shotgun.” “Yeah, I basically called shotgun.” “We’re thinking maybe one of the sleeping bags will be kind of laid out, like, around this bend right here. So somebody’s going to have a head maybe over here, and then the feet all the way down there by the ECLSS wall.” “And Dre, don’t forget that I’ve already claimed the tunnel here. Except you’re not supposed to sleep with your head in there because of carbon dioxide. So I’m going to be hanging like a bat, is my plan. But I won’t even know it because there’s no gravity.” “Here, we’ve got both the toilet area and the exercise device on Orion. So this is the flywheel exercise device. We’ll start here. The toilet is right below it. So underneath me right now is the hygiene bay. And then it kind of looks like a rower. So you have a strap here and a hand-held bar or a harness, depending on what type of exercise you’re doing, and the way you use it is actually in this direction. So this is one of the things that we have to think in a 0g environment for, that the person who’s exercising on this will have their head coming up in the direction of the docking tunnel. And if you’re a really tall person — let’s say, the largest Canadian that we have — and you’re assigned to this mission, your head is going to extend all the way toward the docking hatch.” “That space is going to feel bigger on orbit when we’re floating. And then going up to the, again, the forward portion is what’s up now. But going forward and looking down to the deck, while this may be an awkward space to talk about here on Earth, where we have the normal pull of gravity, when we get into weightlessness, those two walls are going to be spaces that we work in, and that we use more than we do here when we’re on Earth.”

By Jamie Leventhal
April 2, 2026
-
Culture1 week agoWil Wheaton Discusses ‘Stand By Me’ and Narrating ‘The Body’ Audiobook
-
South-Carolina6 days agoSouth Carolina vs TCU predictions for Elite Eight game in March Madness
-
Culture1 week agoWhat Happens When We Die? This Wallace Stevens Poem Has Thoughts.
-
Miami, FL1 week agoJannik Sinner’s Girlfriend Laila Hasanovic Stuns in Ab-Revealing Post Amid Miami Open
-
Minneapolis, MN1 week agoBoy who shielded classmate during school shooting receives Medal of Honor
-
Education1 week agoVideo: Transgender Athletes Barred From Women’s Olympic Events
-
Vermont6 days ago
Skier dies after fall at Sugarbush Resort
-
Politics6 days agoTrump’s Ballroom Design Has Barely Been Scrutinized