References UK clinical guidance from the NHS, the British HIV Association (BHIVA), and the British Association for Sexual Health and HIV (BASHH). Last updated: April 2026.
No, you cannot realistically catch an STI from a bathing suit, borrowed swimwear or shared clothing. STIs require specific conditions to transmit — typically direct skin or mucous membrane contact, exchange of body fluids, or prolonged contact with fresh infectious material. Clothing and shared surfaces almost never provide these conditions.
Here’s what the science says about STI transmission through fabric.
Order a discreet home STI test
How STIs Actually Transmit
STIs need specific conditions to pass from one person to another:
- Direct contact with infected body fluids (semen, vaginal fluids, blood)
- Direct skin-to-skin contact with infected areas (herpes, HPV, syphilis)
- Contact with mucous membranes (mouth, genitals, rectum, eyes)
- Broken skin allowing entry
Most STI pathogens also need a warm, moist environment. They die quickly when exposed to air, drying, sunlight or disinfectants.
Why Clothing Doesn’t Usually Transmit STIs
| STI | Why Clothing Doesn’t Transmit |
|---|---|
| HIV | Dies within minutes outside the body; can’t penetrate intact skin |
| Chlamydia | Doesn’t survive on surfaces; needs living cells |
| Gonorrhoea | Dies quickly outside the body |
| Syphilis | Dies quickly once dry; direct contact needed |
| Herpes | Can survive briefly on surfaces but very unlikely to transmit without direct contact |
| HPV | More resilient but transmission via clothing is not a known route |
| Trichomoniasis | Rare cases of transmission via damp shared items, but very unusual |
The Exception: Pubic Lice and Scabies
A small number of things can theoretically spread through shared clothing, bedding or towels — but these aren’t true STIs in the usual sense:
- Pubic lice (crabs) — can survive briefly on shared fabric
- Scabies — can spread through prolonged close contact and occasionally bedding
Even these are mostly passed through direct skin contact during sex rather than via clothing.
Swimming Pools and Hot Tubs
Swimming pool water contains chlorine, which rapidly kills most STI pathogens. There is no evidence of STI transmission via pool water. The myth that you can catch an STI from a pool is just that — a myth.
Common Myths Debunked
- Toilet seats — no, you can’t get STIs from toilet seats
- Sharing towels — extremely unlikely for STIs
- Hot tubs — chlorinated water kills pathogens
- Swimming pools — no risk
- Shared clothing — no meaningful risk for mainstream STIs
What Does Actually Transmit STIs
- Unprotected vaginal, anal or oral sex
- Sharing injecting equipment
- Mother to baby during birth or breastfeeding
- Blood-to-blood contact
Focus on these genuine transmission routes rather than unlikely ones.
Read more: How you can’t get HIV | HIV transmission facts | What is HIV?
Frequently Asked Questions
Can I get an STI from trying on a bathing suit?
No. There is no realistic risk of STI transmission from trying on swimwear.
What about sharing a towel with someone who has an STI?
For almost all STIs, the risk is negligible. Pubic lice and scabies are the main exceptions, and even then transmission via towels is uncommon.
Can I catch HIV from a swimming pool?
No. HIV dies rapidly in water and chlorine. There is no documented transmission this way.
Related reading
- A to Z of Sex: Sexual Health Terms Explained
- Alcohol and HIV: What You Need to Know
- Anxiety and HIV: Coping and Getting Support
- Are All STIs Curable?
- Blood Problems and HIV: Anaemia, Low Platelets and More
Sources
- NHS — Sexual health conditions
- BASHH — UK clinical guidelines for STI management
- British HIV Association (BHIVA) — HIV treatment guidelines
- Terrence Higgins Trust — sexual health information
- UK Health Security Agency — STI surveillance data
Steve Page is a recognised expert on Sexually Transmitted Diseases (STDs) and STD treatments, having published numerous articles in peer-reviewed journals and presented his research at conferences around the world. He has an in-depth understanding of the latest medical research on STDs, and is an advocate for the development of new treatments and protocols to improve the health of those affected. In addition to his research, he has dedicated his career to understanding the causes and symptoms of STDs, as well as how to best treat those impacted.
