When can a sick child swim, symptom by symptom?
A mild cold with no fever is usually fine, but fever, diarrhea, vomiting, pink eye, and open wounds all mean staying out of the pool. Different illnesses call for different decisions. Here is a practical overview — but always defer to your pediatrician for your specific child. Keeping a sick child out of the pool is a short-term call; the long-term one is making sure they build real water competency, since drowning remains a leading cause of injury death in early childhood (see our drowning statistics dashboard).
- Mild cold, runny nose, no fever: Usually okay if your child feels up to it.
- Fever: Keep them out. A feverish child needs rest, and cool water can worsen how they feel.
- Diarrhea: Absolutely no swimming — this is the most important rule.
- Vomiting or stomach bug: Stay out until fully recovered.
- Ear infection: Depends on the type — see below.
- Pink eye (conjunctivitis): Keep out until cleared; it is contagious.
- Open wounds, rashes, or skin infections: Keep out to protect your child and others.
The rest of this guide explains the why behind these calls so you can make confident decisions.
Why is swimming with diarrhea such a hard no?
This is the one rule no parent should bend. Swimming with diarrhea can spread germs that cause recreational water illnesses — infections passed through contaminated pool, lake, or splash-pad water.
A single accident from one sick child can sicken an entire pool of swimmers. Keeping your child out protects other families as much as your own — the same shared-responsibility message the CDC promotes for healthy swimming. Learn more in our guide to preventing recreational water illness and public pool hygiene.
What about ear infections?
It depends on the type: a middle ear infection with an intact eardrum usually is not worsened by swimming, but ear tubes, a ruptured eardrum, or swimmer's ear require keeping the child out. Ear questions are the most common — and the answer truly depends on the situation.
Middle ear infection (otitis media) with an intact eardrum: Swimming generally does not worsen a typical middle ear infection, since the eardrum keeps water out of the middle ear. Many doctors allow swimming if the child feels well enough, but check first.
Ear tubes or a ruptured eardrum: This is different. Water can pass through tubes or a perforation into the middle ear. Talk to your doctor about whether earplugs are needed; our guide to swimming with ear tubes covers this in detail.
Swimmer's ear (otitis externa): This is an infection of the ear canal, often made worse by water. Keep your child out until it heals. Prevent it with the tips in our swimmer's ear prevention guide.
Should a child swim with a cold or fever?
A mild cold with no fever may be fine if your child feels well, but a fever is a clear stop sign that calls for rest. For a garden-variety cold with no fever, the deciding factor is how your child feels. If they are energetic, breathing comfortably, and eager to swim, a gentle session is usually fine. If they are tired, congested to the point of struggling to breathe, or simply not themselves, rest is the better choice.
A fever is a clear stop sign. It signals the body is fighting an infection and needs energy for recovery, not exertion. Cool water can also make a feverish child uncomfortable and may mask chills. Wait until the fever has been gone for a full day and your child is back to normal.
Children with asthma may find that cold water or vigorous swimming triggers symptoms when they are already congested — see our guide to swimming with asthma for managing this.
How do I help my child get back to swimming?
When your child is on the mend, ease back in with a shorter, lower-intensity session, good hydration, and thorough ear drying afterward. Start with a shorter, lower-intensity session, make sure they are well-hydrated, and dry their ears thoroughly afterward. Good post-swim habits speed recovery and prevent new problems — see our guide to post-swim care for kids.
When in doubt about any symptom, the safest move is to keep your child out of the water and call your pediatrician. Missing one lesson is a minor setback; spreading an illness or worsening an infection is not. A short rest almost always gets your child back to the pool faster and healthier. Make-up credits vary widely between programs, which is worth checking before you enroll — our swim school directory lists options in every state. If you would rather have the whole symptom list on one page, our printable sick-day swim decision card puts every call below on a single sheet for the fridge.
Can a child swim with pink eye?
Keep a child with pink eye out of the water until a doctor confirms it is no longer contagious — typically 24 hours after antibiotic drops begin for bacterial cases, or until symptoms resolve for viral cases. Conjunctivitis spreads readily through hands, shared towels, and goggles, and viral conjunctivitis in particular can pass to other swimmers even when chlorine levels are correct.
Not all red eyes after swimming are infections. Chlorine and chloramines — the irritating compounds formed when chlorine reacts with sweat, urine, and body oils — cause a stinging redness that clears within an hour or two of leaving the pool and produces no discharge. True conjunctivitis produces sticky discharge, crusting on waking, and redness that persists overnight. If the eye is producing discharge, keep your child out and call the pediatrician; if it is simply red and clears quickly, well-fitted goggles usually solve the problem for good.
One practical note for the pool itself: strong chemical smell is a sign of poor water chemistry, not good chemistry. A properly maintained pool has almost no odor. If the pool your child swims in reliably makes their eyes burn, the water quality is the thing to raise with the operator.
What about rashes, wounds, and skin infections?
Open, draining, or uncovered wounds and any contagious skin condition mean staying out; a small healing cut sealed under a waterproof dressing is usually fine. The concern runs in both directions — the child can pick up an infection from the water, and the water can carry their infection to others.
- Fresh cuts, scrapes, or surgical sites: Keep out until closed. Stitches, staples, or surgical glue should stay dry until your surgeon clears swimming, which is usually one to two weeks. Lakes, rivers, and the ocean carry a higher infection risk for open wounds than a well-chlorinated pool.
- Impetigo: Highly contagious. Out of the water until 24 to 48 hours of antibiotic treatment and the sores have crusted or cleared.
- Hand, foot and mouth disease: Keep out while blisters are open or weeping and while the child has a fever. The virus is spread mainly by stool and by fluid from the blisters, not by pool water itself, but shared surfaces and close contact make swim class a poor choice during the contagious window.
- Ringworm and athlete's foot: Not spread through properly treated pool water, but readily spread on wet decks and shared changing-room floors. Treat, cover if advised, and use pool shoes.
- Molluscum contagiosum: Children can generally swim with lesions covered by a watertight dressing or swimwear. Avoid sharing towels and kickboards.
- Eczema: Not contagious and not a reason to stay out. Chlorine can dry and irritate the skin, so rinse before and after, and apply an emollient afterward. Many children with eczema swim comfortably all season with that routine.
- Head lice: Not a swimming risk. Lice cannot be spread through pool water; the caution is shared towels, hats, and helmets on the deck.
Swimmer's itch — an itchy rash from parasites in some freshwater lakes — is not contagious and is a reason to change lakes rather than to stop swimming. Our guide to lake and ocean safety covers where it tends to occur.
What about COVID-19, flu, RSV, and croup?
Any respiratory illness with fever, significant coughing, or labored breathing means staying home, and the deciding factor is the child's breathing and energy, not the specific virus. The CDC notes that the viruses causing COVID-19 and influenza do not spread through properly treated pool water — the risk at a swim lesson is close contact in the changing room, on the deck, and in the water with other children, exactly as it would be at school.
Follow the same rule you would use for the classroom: stay home while feverish and for a full 24 hours after the fever resolves without medication, and until symptoms are improving overall. Beyond contagiousness there is a physical argument for waiting. Swimming demands controlled breathing against water pressure on the chest, and a child with a cough, congestion, or reduced lung capacity is working harder than they look. That matters more in the water than on a playground, where a tired child can simply sit down.
Croup and wheezing deserve particular caution. Cold water can trigger bronchospasm in a child whose airway is already inflamed, and the barking cough of croup typically worsens at night after a demanding day. Wait until the cough has settled. For children with asthma, our guide to swimming with asthma covers the pre-swim routine that makes lessons sustainable year-round.
Does pool chlorine kill everything?
No. Correctly maintained chlorine kills most germs within minutes, but Cryptosporidium survives for more than seven days even in a properly chlorinated pool — which is why the diarrhea rule exists. Understanding this gap is what makes the rest of the guidance make sense to parents who assume chlorine handles everything.
Chlorine at recommended levels inactivates E. coli in under a minute and Hepatitis A and Giardia within roughly 16 to 45 minutes. Crypto is the outlier: it is protected by a tough outer shell that ordinary chlorination does not penetrate, and a single diarrheal accident can contaminate an entire pool for days. That is the whole reason the CDC's rule is not "shower first" but "do not enter the water at all," and why some illnesses carry a two-week wait after symptoms stop.
Two practical consequences follow. First, chlorine needs time and correct pH to work, so a heavily used pool late in a hot afternoon is doing less than the label suggests. Second, chlorine does nothing at all about the illnesses that spread by contact rather than water — pink eye, impetigo, ringworm, and respiratory viruses all move by hands, towels, and shared equipment. Good pool chemistry is necessary and not sufficient; the household rules in this guide are what cover the rest.
Frequently Asked Questions
Can my child swim with a cold?
A mild cold without a fever is usually fine if your child feels well enough and is breathing comfortably. If they are tired, feverish, or very congested, rest is better. Listen to your child's energy level and check with your pediatrician if unsure.
Why can't kids swim with diarrhea?
Diarrhea can spread germs that cause recreational water illnesses, and some, like Cryptosporidium, survive even in chlorinated pools. The CDC says no one with diarrhea should enter the water, and for certain illnesses recommends waiting two weeks after it stops. This protects everyone in the pool.
Can a child swim with an ear infection?
It depends. A typical middle ear infection with an intact eardrum usually is not worsened by swimming, but ear tubes, a ruptured eardrum, or swimmer's ear require keeping the child out or using protection. Always check with your doctor first.
Should a child with a fever swim?
No. A fever means the body is fighting an infection and needs rest. Cool water can also make a feverish child uncomfortable. Wait until the fever has been gone for a full day and your child feels normal before returning to the pool.
How long after being sick can my child swim again?
For mild colds, your child can return once they feel well. For diarrhea, follow CDC guidance and wait until fully recovered — up to two weeks after symptoms stop for some illnesses. Ease back in with a shorter session and check with your pediatrician when unsure. An injury raises a different set of questions from an illness; if your child is in a cast or a walking boot, see whether kids can swim with a cast before booking the next lesson.
Can my child swim with pink eye?
Not until a doctor confirms it is no longer contagious. Bacterial conjunctivitis is generally considered non-contagious about 24 hours after antibiotic drops begin; viral conjunctivitis needs symptoms to resolve. Red eyes that sting right after swimming but clear within an hour and produce no discharge are chlorine irritation, not infection, and well-fitted goggles usually fix that.
Does chlorine kill all the germs in a pool?
No. Properly maintained chlorine inactivates most germs within minutes, but Cryptosporidium survives more than seven days even in a correctly chlorinated pool. That single exception is why the CDC rule for diarrhea is to stay out of the water entirely rather than to shower first. Chlorine also does nothing about illnesses that spread by contact rather than water, such as pink eye, impetigo, and respiratory viruses.
📚 Authoritative Sources
- CDC: healthy-swimming guidance, including never entering the water with diarrhea to prevent recreational water illness.
- American Academy of Pediatrics: pediatric guidance on when illness should keep a child out of the water.
- American Red Cross — Water Safety: general water-safety practices for families easing back into swimming.
Run a swim school, pool or aquatics program? Water-safety guidance only reaches families if someone local is there to teach it — list your program in our directory so parents searching your town can find you.