Can You Get Bird Flu From Drinking Raw Milk? What the Science Actually Says
BIRD FLU, RAW MILK, & ACTUAL HUMAN RISK
Can You Get Bird Flu From Drinking Raw Milk? What the Science Actually Says
Headlines have linked bird flu outbreaks to raw milk consumption, fueling fear and confusion around dairy safety. In this evidence-based, long-form analysis, we examine what bird flu actually is, how it spreads, why raw milk became part of the conversation, and what human studies, surveillance data, and real-world exposure events reveal about true risk. The conclusions may differ sharply from what the media suggests.
Author
Craig McCloskey
Board-Certified Nutritionist
Fear has a way of spreading faster than facts—especially when it comes to food, viruses, and anything that feels unfamiliar. Over the past year, bird flu headlines have surged, and raw milk has found itself pulled into the spotlight once again. For many readers, the implication has been clear:
Drinking raw milk is risky, and bird flu might be the reason why.
But when you step away from the headlines and look at the actual data, a very different picture emerges.
This article breaks down what bird flu actually is, how it spreads, why raw milk became part of the conversation, and what the science says about real-world risk.
Read the full transcript
Are you going to get bird flu from drinking raw milk? If you've been listening to the media, then you probably are. Or are you? With a worrisome outbreak of bird flu. A bird flu out. Bird flu for this bird outbreak in life. The growing bird flu. But what actually is bird flu? And what do the stats actually say? Today I'm going to be jumping in and talking all about bird flu, raw milk, and what your risks actually are. And you might actually be surprised by the end of this video. And as you're going to learn, most of the fear surrounding bird flu has nothing to do with your risk of actually getting sick. It has everything to do with the media just hyping it up. So, when did this collective fear of bird flu and raw milk really begin? Well, in March of 2024, bird flu, also known as H5N1 or HPAI, really started making headlines in the media because of one little outbreak in Texas. This happened when a few dead birds on a small dairy farm in Texas started infecting older cows on that farm. And one of the workers actually tested positive for bird flu when he started experiencing pink eye. Not exactly a life-threatening symptom. Now, this isn't because he drank the raw milk. This is because he came in contact the cows and potentially even the dead birds themselves. So then in April that next month, the World Health Organization reported that this was only the second ever recorded case of bird flu in humans detected in the United States. I want to reiterate that point. This is not a food born illness. This is a respiratory illness that gets transmitted when in contact with other animals. And even then, animal viruses have a very hard time transmitting to humans. Even the CDC themselves report that quote animal influenza viruses are distinct from human influenza viruses and do not easily transmit from animals to humans. And the only demonstrated transmission source for bird flu transmission to humans is by direct contact of animals. Simply put, you would need to be at the farm and come in contact with one of the animals that was infected with bird flu. Or the farmers themselves would have to come in direct contact with the infected cows, then mishandle the raw milk that would then get sold to us as the consumers. Then we would drink the milk. But here's the thing. While bird flu can contaminate milk samples from improper and poor handling by farmers, the FDA themselves stated in an earlier report that quote, "No evidence supports food born transmissions of bird flu to humans through raw milk." Right there, just hearing that, that should be case closed for raw milk and bird flu. But if that's not enough, in May of 2024, hundreds of people drank raw milk from a dairy with cows infected with bird flu. And guess what happened? Not a single report. Nobody got ill. Nobody complained. Not a single report was filed. This was widely reported by the Los Angeles Times at that time in May of 2024. And when they investigated it, they found nothing. This was then reported to the FDA and they chose not to investigate it. To this day, there have been zero known cases of bird flu infecting humans from drinking raw milk. Zero. none. However, there have been a smaller number of bird flu cases in farm workers working in direct contact with the farm animals. The illnesses are generally very mild with conjunctivitis or pink eye or eye inflammation as the main symptom. Despite this, without any supporting evidence of viral transmission from raw milk to humans in the peer-reviewed literature, the CDC went on to recommend in April of 2024 that in the interim, until they can figure out if bird flu in raw milk is a problem, it's probably best if humans avoid raw milk consumption just in case. They had no data showing that if bird flu, a viral infection in raw milk is a problem, but they recommended that it's probably best just to avoid raw milk just in case. Of course, the media had a field day with this. And then, of course, it was another excuse to label raw milk as a poison or inherently dangerous. Now, after I spoke to my local farmer about the bird flu issues, they said not only do humans not catch bird flu from drinking raw milk, but the cows don't even get severe symptoms either. While this is an animal to animal viral infection, respiratory infection, this isn't meant to go from animals to humans. Cows don't even experience extreme symptoms. While most of the cows in the herd experience no symptoms, my farmer was saying the ones that do often have mild symptoms and after 6 weeks they develop herd immunity altogether. Now, many of the major headlines about bird flu in the media today are not actually about humans. They're about cats. While there have been some documented cases of bird flu causing death in cats, unfortunately, because they're another animal, this is a viral transmission from animal to animal. This is really the extent of it. This isn't a problem in humans, as the data has shown. And the recent research done on cats found that cats given extremely high doses of bird flu unfortunately did die. But the cats that were given consistently low doses of bird flu over time not only lived, but they developed immunity. Now, if you're still not convinced, I'll mention this one last thing. From 2005 to 2020, the CDC released data for all foodborne transmission sources. This CDC data set found there were over 3,800 milk illnesses. A majority of those, over 2100 of those 3,800 came from pasteurized dairy, not raw milk. And of these 3,800 milk illnesses, these were linked to bacterial pathogens, not viral. The CDC couldn't find a single viral illness associated with milk, raw or pasteurized. Viruses like bird flu were not found to be a problem in dairy. However, bacteria, that's an entirely different story. Is raw milk safe from pathogenic bacteria like ecoli and salmonella. We're really going to talk about that in a later video soon to come. So, make sure you're subscribed to this channel if you're not already. The predominant virus the CDC studied in this data set from 2005 to 2020 was neurovvirus which was associated with almost 8,200 illnesses. This was from leafy greens. In that 16-year period from 2005 to 2020, no neurovirus or any other viral infection for that matter was reported in dairy, raw or pasteurized. Now, the irony of this, drinking raw milk actually is antiviral in and of itself. People are afraid of drinking it because they think they're going to get viruses, which they're not. But drinking raw milk actually is antiviral. That is one of the major reasons that people should consume drinking more raw milk. Not only is bird flu, which is a respiratory viral illness, not something to worry about in humans. But raw milk, not pasteurized, I got to emphasize that point. Drinking raw local milk that's not been pasteurized, heated to high temperatures is full of so many naturally occurring antiviral compounds. Just like human breast milk when we're infants that we get from our moms, why do we drink breast milk from our moms when we're infants? One of the major reasons is that we don't have an adaptive immune system yet. The breast milk from our moms contains so many of these antiviral compounds that are the same in cow's milk. And when we're infants and we're getting that major dose of these compounds, it helps to build up our immune system and protect us against those viruses. This is entirely so well documented that raw dairy is such an excellent source of antiviral properties that it's strongly recommended that infants not be deprived of raw breast milk due to the presence of viruses outside the body. Raw cow's milk and human breast milk are nearly identical in virtually every way. That's what makes it so compatible when humans are drinking cow's milk. That's what makes it so compatible. But when you heat up raw milk like that of pasteurization, heating it up to high temperatures, a lot of these amunoprotective compounds are very sensitive to heat. So it's going to destroy or denature a lot of these compounds altogether. Now I'll end with this. You might be thinking, why not just play it safe and just consume pasteurized dairy and not consume the raw dairy at all? Forget the antiviral benefits. just consume pasteurized dairy just to be safe. For starters, a majority of people don't do well with dairy for the sole fact that it's been pasteurized and homogenized. It's not necessarily the dairy that they can't handle. It's just the way that it's been processed. Because a majority of the population is lactose intolerant. And when you are heating raw dairy that has all of these beneficial enzymes and compounds and peptides that help you to be able to digest that milk, when you heat it up to high temperatures, you're killing off all of those beneficial aspects. So, you're not going to be able to tolerate it as well. You might get gassy, bloated, digestive issues, acne. I know I did when I was growing up. I experienced all those things from conventional store-bought pasteurized milk. But when I switched to drinking raw milk close to a decade ago, I can drink two to three gallons of raw milk a week, raw kafir, which is a fermented dairy, cheeses, and I don't experience any of those issues. Not to mention, there have been dozens upon dozens of studies showing the unique benefits of consuming raw dairy. It's even pretty astonishing to see that children who grew up drinking raw milk have lower rates of asthma, allergies, and eczema. Maybe kind of ironically though, according to another study, raw milk consumption in the first year of life actually improves respiratory tract infection. Raw cow's milk, not pasteurized milk because all the bacteria have been killed off. Raw cow's milk consumption also improves levels of healthy gut bacteria like lactobacillus. Lactobacillus is a healthy type of gut bacteria that can help with so many things like skin issues, digestive issues like IBS, weight loss, and so much more. And like I already mentioned, consuming dairy in its raw form, you're if you're lactose intolerant, odds are you're probably going to be able to tolerate that a lot better. Now, just to recap, bird flu is not an issue in raw dairy. And many major organizations like the CDC, FDA, and World Health Organization all recommend that we avoid raw dairy essentially just in case with no good evidence supporting the fact that you can get sick from bird flu when drinking raw milk. On the contrary, the science we laid out today showed that bird flu is not a problem in humans and consuming raw dairy can be an absolutely powerful health food as long as you're sourcing it from reputable sources. Just head to websites like realmilk.com or rawmillinstitute.org and you will find a long list of farms that sell raw milk, but they are going the extra mile making sure that they are maintaining proper sanitary conditions and they are extensively testing every single batch of raw milk that they put out. Guys, if you like this content, be sure to hit that like and subscribe button below. Leave your favorite takeaway in the comment section below and send this out to somebody that you know needs to see it most.
Bird Flu Is a Respiratory Virus, Not a Foodborne Illness
Bird flu, or avian influenza, refers to a group of influenza A viruses that primarily infect birds. The strain responsible for most recent concern is H5N1, often labeled highly pathogenic avian influenza. What’s crucial to understand from the start is that these viruses are biologically distinct from human influenza viruses.
Animal influenza viruses do not easily infect humans. When they do, transmission almost always occurs through direct contact with infected animals, particularly through respiratory secretions or contaminated surfaces in close proximity. This is why the Centers for Disease Control and Prevention consistently describes avian influenza as a zoonotic risk primarily for people working directly with animals, not for the general public.
In other words, bird flu behaves like a respiratory virus with very limited spillover potential—not like salmonella, E. coli, or other pathogens commonly associated with foodborne illness.
How Raw Milk Entered the Conversation
The current fear around bird flu and raw milk traces back to early 2024, when a small dairy operation in Texas reported that several cows had tested positive for H5N1 after exposure to infected birds. Shortly afterward, a farm worker developed conjunctivitis and tested positive for the virus.
That single case made national headlines. What many reports failed to emphasize was how the exposure occurred. The worker did not contract bird flu from drinking milk. The infection was linked to direct contact with animals and possibly dead birds on the farm. The symptoms were mild, limited primarily to eye inflammation, and resolved without complication.
By April 2024, the World Health Organization confirmed that this was only the second recorded case of bird flu in a human in the United States. Despite this, raw milk quickly became framed as a potential transmission vehicle, even though no evidence supported that assumption.
What the Evidence Says About Milk and Bird Flu
To date, there is no documented evidence that bird flu has ever been transmitted to a human through drinking milk - raw or pasteurized.
Even the U.S. Food and Drug Administration has stated that while viral fragments may occasionally be detected in improperly handled milk samples, there is no evidence supporting foodborne transmission of H5N1 to humans.
That distinction matters. Detecting viral material is not the same thing as demonstrating infectivity. A virus must survive processing, ingestion, and the human digestive system in a viable form to cause infection. With bird flu, there is no evidence that this happens through dairy consumption.
Perhaps the most compelling real-world example occurred in May 2024, when hundreds of people consumed raw milk from a dairy where some cows had tested positive for bird flu. Public health authorities monitored the situation closely. No illnesses were reported. No symptoms emerged. No cases were documented. The incident was reported to federal agencies, and no investigation followed - because there was nothing to investigate.
As of today, there are zero known cases of bird flu infection in humans linked to drinking raw milk.
Why Public Health Agencies Still Advise Caution
In April 2024, the CDC recommended that people avoid raw milk “out of an abundance of caution.” This recommendation was not based on evidence of harm, but on uncertainty. In public health, precautionary guidance is often issued when data is incomplete, even if existing evidence suggests low or nonexistent risk.
That nuance is rarely conveyed clearly in media coverage. “We don’t have evidence” often becomes “this is dangerous,” even though those are very different statements. The result is fear without context, particularly when raw milk already carries social and regulatory stigma.
Viral Risk and Bacterial Risk Are Not the Same
During that same period, thousands of viral foodborne illnesses were reported, primarily due to norovirus. Nearly all of those cases were linked to produce, especially leafy greens. Dairy - raw or pasteurized - was not identified as a viral transmission source.
This distinction is critical. Bird flu is a virus. It does not behave like bacteria that can proliferate in food and cause gastrointestinal illness. The data simply does not support the idea that dairy is a meaningful vector for viral transmission.
Raw Milk and Immune-Active Compounds
Ironically, one of the reasons raw milk is often feared - its biological activity - is also one of its most unique characteristics. Unpasteurized milk contains naturally occurring immune-supportive compounds, including lactoferrin, immunoglobulins, enzymes, and antimicrobial peptides.
These compounds are sensitive to heat and are largely denatured during pasteurization. This is not controversial science. Human breast milk contains many of the same classes of immune-active compounds, which is one of the reasons it plays such a critical role in early immune development.
From an evolutionary standpoint, milk has never been a sterile substance. It has always been biologically active, designed to support growth, immune education, and resilience.
Why Many People Tolerate Raw Dairy Better
A common argument is that avoiding raw milk entirely is the safest option. But this overlooks why so many people struggle with conventional dairy in the first place. Pasteurization and homogenization alter milk proteins, destroy enzymes, and change fat structures in ways that can impair digestion.
Many individuals who identify as lactose intolerant or dairy-sensitive find that they tolerate raw milk, raw kefir, and traditionally prepared cheeses without issue. This isn’t because dairy suddenly becomes non-dairy—it’s because the enzymes and bioactive compounds that aid digestion remain intact.
What About the Cat Headlines?
Some of the most dramatic bird flu stories in recent months have focused on cats. In experimental settings, cats exposed to extremely high doses of H5N1 experienced severe illness. However, animals exposed to lower, repeated doses often survived and developed immunity.
These findings highlight something fundamental about biology: dose matters, and immune systems adapt. Importantly, none of this evidence supports dietary transmission to humans, nor does it translate to real-world raw milk consumption.
Sourcing Matters More Than Fear
None of this suggests that raw milk should be sourced carelessly. Like any perishable food, quality and handling matter. Clean milking practices, healthy animals, regular testing, and transparency are essential.
For those who choose to consume raw milk, directories such as realmilk.com and Raw Milk Institute help connect consumers with farms that follow rigorous safety standards and testing protocols.
The Takeaway
Bird flu is not a foodborne illness. It is a respiratory virus with extremely limited human transmission, almost exclusively through direct animal contact. Despite intense media coverage, there is no evidence that drinking raw milk poses a bird flu risk to humans.
At the same time, properly sourced raw dairy remains a nutrient-dense, biologically active food with unique immune-supportive properties that are lost during pasteurization.
When fear is removed from the equation and evidence is allowed to speak, the conclusion is clear: bird flu is not the threat it’s been made out to be—especially when it comes to raw milk.
