Antimicrobial Resistance and the Football Dressing Room: The Forgotten Link in the One Health Fight

Do not panic about your dog. That is the message a research team at Bournemouth University sent to pet owners in 25 countries after publishing in the journal Transboundary and Emerging Diseases its finding of antibiotic-resistant Klebsiella pneumoniae in samples taken from dogs and cats. Professor Stephen Fordham, who led the team, said plainly that there is no reason for owners to be alarmed: they found a genetic relatedness between bacterial strains in pets and strains in humans, but did not prove transmission.

I read that story on a morning in Lyon, coffee in hand, eyes fixed on a computer screen. And the first thing that surfaced in my mind was not the neighbour's cat. I thought about the dressing room. In there, more than twenty grown men, every week, share towels, share the ice bath, share rolls of bandage, and trade with one another the open scratches they pick up in every challenge. If anyone wants to find an ideal environment for resistant bacteria to breed, they need not look beyond the door of a professional club's dressing room.

I know what you are thinking. You are thinking I am hijacking a veterinary story into football to farm a few reads, exactly the trade people call me a manufacturer of hot takes for. I accept that accusation, because I planted it myself back in 2026, when I wrote a piece claiming Mbappé was merely a product of a system and sent 2.3 million readers into a fury. But this time, let me prove why these two seemingly unrelated stories are actually one.

What the study says, and what it does not say

Before I push this too far, some data discipline is needed. The Bournemouth team analysed 712 animal samples, then compared them with more than 38,000 human samples. They identified the ST147 strain, a specific genetic lineage of Klebsiella pneumoniae, and found that 87 percent of the strain types in pets were closely related to strain types in humans. About 43 percent of samples showed antimicrobial resistance. In cats, 80 percent of strains were multidrug-resistant. In dogs, that figure was 56.3 percent.

Reading this far, many people will immediately type a status update: dogs and cats are passing resistant bacteria to us. That is a false conclusion, and the researchers themselves said so in advance. They found a genetic correlation, not a causal relationship. Bacteria in dogs and bacteria in humans being similar does not mean the dog infected its owner. Both may have picked it up from a third source, or each side may have a parallel, independent history of resistance.

I know that feeling of carving out a convenient truth for myself, because I once had a truth I carved out myself, until Mbappé smashed it to pieces. So this time I forced myself to reread that reassuring line at least three times before writing anything. Numbers are never wrong; only the person reading them presumes to be right.

But that very calm warning opens another question. If veterinary science is actively defusing sensationalism by phrasing a headline as a question, and by quoting a researcher to reassure readers, then where is football in the picture people call One Health?

The dressing room: an ecosystem nobody will look at

One Health is the framework that treats human, animal and environmental health as one interconnected system. This new study is a slice of it: the health of pets can serve as a mirror held up to public health, and vice versa. But there is one laboratory forgotten in nearly every One Health discussion, and it sits right in the middle of the pitch: the dressing room of a professional football team.

Start with the physical structure, the thing no broadcast data model will ever show. Forty players, coaching staff and medical personnel crammed into a closed space several times a week for ten months a year. A shared ice bath, where the low temperature suppresses a player's peripheral circulation but does not kill bacteria. Training mats, massage tables, door handles, ball cages, towels, blood-pressure cuffs, phones: every one of those contact surfaces accumulates week by week. And most importantly, open skin. Football is a contact sport, and every match leaves on each player an average of a few scratches, turf burns, bites, or burst blisters. The bacteria's entry door is almost always open.

Add to that structure a culture. In football, a player with flu, with a skin infection, or with a sore throat faces a very comfortable short-term choice: take antibiotics to get back fast, in time for Sunday's match. Nobody wants to be absent. The long-term pressure, the risk of resistance, is invisible and sits in the future tense; the immediate pressure, meaning a place in the squad, a contract, bonuses and a career, is so tangible that it crushes every other consideration. This trap is not new. It is precisely the trap the Bournemouth study describes at another scale: using antibiotics for short-term gain, paying for it with long-term resistance.

And if you want to see the problem travel along the flow of money, look at the academies. When a seventeen-year-old from an academy in South America or West Africa is sold to Europe for tens of millions of euros, the medical and sanitary conditions of the academy where he grew up appear in almost no transfer dossier. Clubs analyse every sprint metre of a young talent, every muscle metric, every past injury, yet nobody asks what kind of medical facility he came from. When he arrives, carrying his own microbiome, he steps into a shared dressing room. That is a global infection pathway nobody has mapped.

This is where I have to be honest, both with you and with myself. Professional football has no public database on antibiotic use in sports medicine, in complete contrast to how UEFA or FIFA publish injury data, distance covered or xG. There is no table telling me how many antibiotic courses a Ligue 1 team prescribes each season. There is no index telling me how a youth academy in Asia or Africa handles skin infections. That vacuum does not exist because the problem is small. It exists because the problem has never been measured. And what is not measured cannot be managed.

Lessons from elsewhere: when sport paid the price

I do not need to invent a football story to prove this concern is real. I only need to look across the Atlantic. In 2026, eight players of the St. Louis Rams, an NFL American football team, contracted methicillin-resistant Staphylococcus aureus, or MRSA, in an outbreak at their facility. A few years later, the Cleveland Browns repeated the scenario with a similar strain. This is no longer an isolated case of one unhygienic club. It is a repeatable model for any contact sport: a closed space, skin-to-skin contact, shared equipment, and a bacterium that has learned to survive antibiotics.

Football is not immune to that model. It simply lacks a chronicler.

Consider the microbial ecosystem of a training centre. When an object such as a door handle carries human skin temperature and the humidity of a dressing room, it becomes a transfer station. A player carrying staphylococcus on his skin, usually harmless, touches it. The next player, with an open turf burn, touches the same spot. Not a single antibiotic pill is needed for the bacteria to have a route. But antibiotics are what turn an ordinary infection into an intractable problem, by killing the weak bacteria and leaving behind exactly those that have learned resistance, then giving them empty space to multiply.

That is precisely the mechanism the Klebsiella pneumoniae study describes in pets. The difference between dogs and cats and footballers is only the environment, not the mechanism. One story, two stages.

When a player suffers a resistant infection, the price is no longer merely medical. Follow the money. One MRSA case can keep a centre-back worth forty million euros out for six weeks. Those six weeks are wages that must be paid, results lost on the pitch, positions slipped in the table, squad value eroded. In a financial system where a single Champions League win can be worth tens of millions of euros, a bacterial colony in the dressing room is a debt nobody books, until it comes due at the same time as a surgery. And football is a business that profits from the human body, where the only asset is the player's physique. Maintaining that physique without microbial data is an accounting hole no finance director wants to admit.

Where I might be wrong

This is the part where I have to bite myself, because I know any reader has the right to throw that question back at me.

First, I am joining two real things, a veterinary study and sports MRSA outbreaks, but I have no study proving a direct link between players' pets and the football dressing room. The boundary between those two stories cannot be crossed by reasoning alone. If I write that a player's dog is passing resistance into the dressing room, I commit exactly the error that study warned against: reading a genetic correlation as a causal relationship. And I committed to myself that I would not do that.

Second, the real problem may lie in grassroots football rather than the elite game. Big European clubs have professional medical staff, doctors, protocols. In a fourth-tier amateur side where players work all week and turn out on Sunday afternoon, the breeding ground for resistance may sit precisely there, where nobody oversees a single antibiotic dose, where the dressing room is a converted warehouse. I am aiming at the visible target while the genuinely worth-aiming one sits in the dark. If so, all my analysis of big clubs is a distraction.

Third, and this is what makes me question myself most, I may be using a health story to sell a football headline. For years I have done that more than a few times. The pandemic podcast taught me that silence is also a form of interview. And there are moments when a decent journalist is the person who knows how to say that they do not yet have enough data to shout about this. I have been wrong on both sides of that line, shouting when data was thin, and staying silent when I should have spoken. My entire career is a series of corrections to myself, made publicly, before millions of people.

What I can assert, and assert with certainty, is far smaller than the headline: we are not measuring it. That is the only fact I dare bet on. Numbers are never wrong; only the person reading them presumes to be right, and the worst reader of numbers is the one who dares assert what he has no data to assert.

What is more worrying than a bacterium

This is where I want to linger longest, because it is not really about dogs and cats, nor really about players.

What makes the Bournemouth study worth reading lies in how science protects itself from exaggeration. They publish strong figures, 87 percent, 43 percent, 80 percent, then immediately attach a reassurance. They frame the article with a question headline to cool curiosity. They do exactly what football media almost never does: present the evidence, then state the limits of that evidence in the same breath. They know a sufficiently shocking number will detach itself from its context and roam across the press.

Football has no such habit. We are used to hot takes, to the slogan of now or never, to conclusions delivered before the referee blows the final whistle. I am a product of that culture, and I am one of the people who helped build it. But emotion is not the enemy of reason; it is the silent analyst. What I learned from a laboratory in Bournemouth is not a fear of bacteria, but a professional standard: state what you know, and state what you do not know, in the same sentence.

For football, more concretely, the link I want to see repaired is data. I want to see federations begin tracking antimicrobial consumption in sports medicine the way they already track distance covered or xG: openly, periodically, comparably. I want to see one simple metric, antibiotic courses per player per season, written into a club's medical report. Not to name and shame anyone, but to know where we stand against a threat the World Health Organization ranks among the greatest health risks of this century.

The 2026 World Cup across three North American countries will gather 48 national teams. That is thousands of athletes, coaching staff and officials moving through dozens of cities within a month, carrying their bacteria with them. If there is a moment for football to start measuring its own microbial health, it is now, before a colony of resistant bacteria has time to shape the next generation of players, quietly, the way it has always slipped into every dressing room.

You can read the story about dogs and cats and go to sleep in peace. The researchers gave you that right, and they were correct to do so. But I will not sleep in peace with the thought that while an entire veterinary field counts every sample, football still counts every goal without counting every antibiotic course. One side counts to cure. One side counts to sell tickets. Only one of them is preparing for the worst, and I do not think it is the right one.

If you are a club doctor, I have a question for you: last season, how many antibiotic doses did your team use? If you can answer that number immediately, you are in a better group than most. If you hesitate, then perhaps both of us have just learned something from a study we thought was about dogs and cats.

The boy I once dismissed is now lifting a trophy, while I am lifting a microphone to apologise. Perhaps it is time I used that microphone for another question, not about who plays better than whom, but about the thing no stand can see, and no statistics table will count.