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Amid bird flu spread, experts reveal if it's safe to drink milk: 'Indirect concern'

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Amid bird flu spread, experts reveal if it's safe to drink milk: 'Indirect concern'

Traces of bird flu have been detected in pasteurized milk — leaving many people wondering if it’s safe to drink.

The U.S. Food and Drug Administration (FDA) released a notice on Thursday stating that one in five retail samples of commercial milk tested positive for fragments of highly pathogenic avian influenza (HPAI), more commonly known as bird flu or avian flu.

The share of milk with viral remnants was higher in areas where herds of cattle had been infected.

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The presence of the virus in the milk doesn’t necessarily mean there is a risk to consumers, however, the FDA noted.

“Additional testing is required to determine whether an intact pathogen is still present and if it remains infectious, which would help inform a determination of whether there is any risk of illness associated with consuming the product,” the agency stated.

Traces of bird flu have been detected in pasteurized milk, leaving many people wondering if it’s safe to drink. (iStock)

“Although bird flu viruses do not normally infect humans, sporadic human infections have occurred,” the FDA stated in the alert.

Pasteurization eliminates risk, experts say

Before milk can be sold commercially, government regulations require that it is pasteurized.

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During the pasteurization process, raw milk is heated to a certain temperature for a brief period of time and is then chilled again, according to the International Dairy Foods Association (IDFA) website.

This process kills any pathogens and ensures that milk is safe to drink.

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Dr. Scott Pegan, professor of biomedical sciences at the University of California, Riverside and a biochemist for the United States Medical Research Institute of Chemical Defense, said the FDA’s finding does not mean there is any direct risks to consumers.

“In the U.S., commercial intrastate sold milk is required to be pasteurized,” he told Fox News Digital. “This process is geared to kill viruses like H5N1 and other bacteria that can pose a threat to human health.”

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A milk pasteurization system is shown at a food and drink exhibition. Pasteurization is a process that kills microbes in food and drink, such as milk, juice, canned food and others. (iStock)

“Milk that has been pasteurized is safe and there is no current reason to avoid it or other pasteurized milk products based on the FDA’s findings,” Pegan went on. 

“However, there is a substantial risk of consuming unpasteurized milk and products of that milk.”

Even after viruses and bacteria have been killed in pasteurized milk, remnants can remain in the milk, he said — but they are not dangerous.

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Edward Liu, M.D., chief of infectious diseases at Hackensack Meridian Jersey Shore University Medical Center in New Jersey, agreed that there is not a risk associated with drinking pasteurized milk.

“The pasteurization is the key — the heat treatment kills off the viruses,” he told Fox News Digital. “Although the FDA’s testing picked up fragments [of the virus], the heating process destroyed it, so it’s not able to infect people.”

The share of milk with viral remnants was higher in areas where herds of cattle had been infected. (iStock)

The fragments alone are not enough to cause any kind of infection, he confirmed.

“I think the key word is ‘fragments.’ Just like with COVID, if you do a PCR test a month later, we’ll detect little fragments of the virus, but it’s not active anymore,” Liu said. 

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“So if the virus isn’t entirely intact, it shouldn’t be able to infect you.”

Any sporadic cases of human infection would likely occur when a farmer is handling birds directly, Liu said.

Consumers should avoid drinking raw milk that has not been pasteurized, the FDA said.

“There are some people who like to go all natural, but pasteurization has been used for decades for safety,” he said. “Some degree of processing is actually better and safer for us.”

Animals pose greater concern, experts say

The “indirect concern” within the scientific and medical community involves the increased risk of “spillover” to humans from animals with the H5N1 virus, said Pegan. 

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“Prior to the outbreak in dairy cattle, this concern principally revolved around the risk of transmission to humans from wild birds or poultry,” he told Fox News Digital.

The “indirect concern” within the scientific and medical community involves the increased risk of “spillover” to humans from animals with the H5N1 virus, one expert said. (REUTERS/Dado Ruvic/Illustration/File Photo)

“The presence of H5N1 avian flu in the milk of these cattle shows that cattle may be able to provide a new reservoir for this virus, increasing the odds of exposure to those in direct contact with the infected cattle.”

The more animals that are infected, the higher chance that humans may come in direct contact with the virus — which likely would lead to a greater number of human cases, said Pegan. 

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“The case of cattle-to-human transmission seen in Texas is in line with this concern,” he noted. 

“Also, the more mammals infected increases the chances that the virus will adapt to other mammals, such as humans.”

FDA’s recommendations

The FDA restated its “long-standing recommendation” that consumers avoid drinking raw milk that has not been pasteurized. 

The agency also recommends that companies refrain from manufacturing or selling raw milk or raw milk products made with milk from cows that tested positive for bird flu, were exposed to the virus or showed symptoms of illness.

“Over the past few years, there has been an increased consumer demand for these unpasteurized products,” Pegan said. 

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The FDA restated its “long-standing recommendation” that consumers avoid drinking raw milk that has not been pasteurized.  (iStock)

“While not allowed to be sold via interstate brands, some states have relaxed local sales of these products at farmer’s markets and similar outlets,” he said. 

“Individuals may want to avoid those unpasteurized products until more information is obtained about this H5N1 avian flu outbreak in dairy cattle.”

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The FDA also urged producers to “take precautions” when discarding milk from affected cows, “so that the discarded milk does not become a source of further spread.”

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So far, only one person has been confirmed to have contracted the virus after exposure to infected cows, the FDA stated.

“The CDC says the risk to the general public remains low,” the agency said.

“The FDA and USDA continue to indicate that, based on the information we currently have, our commercial milk supply is safe.”

Fox News Digital reached out to the National Milk Producers Federation, the American Dairy Association and the International Dairy Foods Association for comment.

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Scientists pinpoint why COVID vaccine may trigger heart inflammation in certain people

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Scientists pinpoint why COVID vaccine may trigger heart inflammation in certain people

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SCREENING DEBATE A new study questions whether annual mammograms are necessary for most women

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Aging-related joint disorder increasingly affects people under 40, study finds

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Aging-related joint disorder increasingly affects people under 40, study finds

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Cases of gout are rising in younger individuals, according to a global study.

The condition, which is a type of inflammatory arthritis, steadily increased in people aged 15 to 39 between 1990 and 2021, researchers in China announced.

Although rates vary widely between countries, the total number of young people with the condition is expected to continue rising through 2035.

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The study, published in the journal Joint Bone Spine, investigated 2021 data from the Global Burden of Disease (GBD), spanning 204 countries within the 30-year timeframe.

The data measured gout prevalence, incidence and years lived with disability, tracking global trends over time. The results showed a global increase across all three outcomes.

Gout is expected to continue rising in young people through 2035. (iStock)

Prevalence and disability years increased by 66%, and incidence rose by 62%. In 2021, 15- to 39-year-olds accounted for nearly 14% of new gout cases globally, the study found.

Men from 35 to 39 years old and people in high-income regions had the highest burden, but high-income North America topped the list for highest rates.

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Men were also found to have lived more years with gout due to high BMI, while women tended to have the condition as a link to kidney dysfunction, the study noted.

The total number of cases is expected to increase globally due to population growth, but the study projected that rates per population would decrease.

The researchers noted that data quality, especially in low-income settings, could have posed a limitation to the broad GBD data.

What is gout?

Gout is a common form of arthritis involving sudden and severe attacks of pain, swelling, redness and tenderness in the joints, according to Mayo Clinic. It most often occurs in the big toe.

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The condition occurs when urate crystals accumulate in the joint. These form when there are high levels of uric acid in the blood, which the body produces when it breaks down a natural substance called purines.

A gout flare-up can happen at any time, often at night, causing the affected joint to feel hot, swollen, tender and sensitive to the touch.

Urate crystals, described as sharp and needle-like, build up in the joint, causing intense pain and swelling. (iStock)

Purines can also be found in certain foods, like red meat or organ meats like liver and some seafood, including anchovies, sardines, mussels, scallops, trout and tuna, according to the Mayo Clinic. Alcoholic drinks, especially beer, and drinks sweetened with fruit sugar can also lead to higher uric acid levels.

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Uric acid will typically dissolve in the blood and pass through the kidneys into urine, but when the body produces too much or too little uric acid, it can cause a build-up of urate crystals. These are described by the Mayo Clinic as sharp and needle-like, causing pain, inflammation and swelling in the joint or surrounding tissue.

Risk factors for gout include a diet rich in high-purine foods and being overweight, which causes the body to produce more uric acid and the kidneys to have trouble eliminating it.

Experts urge patients to seek medical attention for gout flare-ups. (iStock)

Certain conditions like untreated high blood pressure, diabetes, obesity, metabolic syndrome and heart and kidney diseases can increase the risk of gout, as well as certain medications.

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A family history of gout can also increase risk. Men are more likely to develop the condition, as women tend to have lower uric acid levels, although symptoms generally develop after menopause.

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Untreated gout can cause worsening pain and joint damage, experts caution. It may also lead to more severe conditions, such as recurrent gout, advanced gout and kidney stones.

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The Mayo Clinic advises patients to seek immediate medical care if a fever occurs or if a joint becomes hot and inflamed, which is a sign of infection. Certain anti-inflammatory medications can help treat gout flares and complications.

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Fox News Digital reached out to the researchers for comment.

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New study questions whether annual mammograms are necessary for most women

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New study questions whether annual mammograms are necessary for most women

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A new study suggests that annual mammograms may not be the only effective approach for preventing breast cancer.

The research, published in the Journal of the American Medical Association (JAMA), tested a risk-based breast cancer screening approach against standard annual mammography.

The WISDOM randomized clinical trial, led by study authors from universities and healthcare systems across the U.S., considered more than 28,000 women aged 40 to 74 years old, splitting them into a risk-based screening group and an annual mammography group.

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Researchers calculated each woman’s individual risk based on genetics (sequencing of nine breast cancer genes) and other health factors. 

A new study suggests that annual mammograms may not be the only effective approach for preventing breast cancer. (iStock)

Those who were at the highest risk were advised to alternate between a mammogram and an MRI scan every six months. Patients with elevated risk were told to get an annual mammography and counseling.

Average-risk women were guided to get mammograms every two years, while low-risk individuals were advised to have no screening until they became higher risk or reached age 50.

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The researchers found that risk-based screening did not lead to more advanced cancer diagnoses (stage 2B or higher) compared with annual screening, indicating that it is just as safe as traditional methods. The risk-based approach, however, did not reduce the number of biopsies overall, as researchers had hoped.

Among the risk-based group of women, those with higher risk had more screening, biopsies and detected cancers. Women at lower risk had fewer procedures.

The research, published in the Journal of the American Medical Association (JAMA), tested a risk-based breast cancer screening approach against standard annual mammography. (iStock)

“[The] findings suggest that risk-based breast cancer screening is a safe alternative to annual screening for women aged 40 to 74 years,” the researchers noted in the research summary. “Screening intensity matched individual risk, potentially reducing unnecessary imaging.”

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Fox News medical contributor Dr. Nicole Saphier, associate professor of radiology at Memorial Sloan Kettering Cancer Center in New Jersey, commented that while these findings are important, the study “completely sidelines” what screenings are designed to do — detect cancer early.

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“If you don’t measure stage 0, stage 1 or stage 2A cancers, you can’t tell whether personalized screening delays diagnosis in a way that matters for survival and treatment intensity,” Saphier, who was not involved in the study, told Fox News Digital in an interview.

Those who were at the highest risk were advised to alternate between a mammogram and an MRI scan every six months. (iStock)

More than 60% of breast cancers in the U.S. are diagnosed at stage 1 or 2A, where cure rates exceed 90%, the doctor noted.

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The trial doesn’t “fully evaluate” whether risk-based screening changes detection at the earliest and most treatable stages, where screening “delivers its greatest benefit,” according to Saphier.

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“Mammography is not without risk — radiation exposure, false positives, anxiety and potential over-diagnosis are real and should be acknowledged,” she said. “But it remains the most effective, evidence-based tool for detecting breast cancer early, when treatment is most successful.”

The expert added that labeling women under 50 as “low risk” is “outdated,” as breast cancer diagnoses are on the rise in younger females.

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“Until long-term mortality data support alternative approaches, annual screening beginning at 40 for average risk women should continue,” Saphier added. “Women should be assessed for breast cancer risk by 25 years old to determine if screening should begin earlier.”

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