To prevent mpox, avoid close skin-to-skin contact with anyone who has a rash, get the two-dose JYNNEOS vaccine if you're at increased risk, and limit anonymous or multiple partners during outbreaks. Condoms help but don't fully protect you, since the rash spreads beyond areas they cover CDC.
with the right treatment
testing, not symptoms, decides
| Item | Value |
|---|---|
| Curable? | yes — with the right treatment |
| Tested by | exam + lab |
| If you may have it | get tested — testing, not symptoms, decides |
How does mpox spread, and what actually prevents it?
Mpox is caused by the monkeypox virus, a cousin of the smallpox virus. The clade II strain drove the global outbreak that began in 2022, moving mostly through close skin-to-skin contact, including the kind that happens during intimate and sexual contact, and it has affected mostly men who have sex with men CDC. Because the main route is direct contact with the rash and the fluid in those lesions, prevention is built around limiting skin-to-skin exposure and reducing your own susceptibility through vaccination.
You can catch it from close contact with someone who has mpox, from contaminated materials like shared bedding or towels, from infected animals, and a pregnant person can pass it to the fetus CDC. Most people recover fully, but the illness can be severe in people who are immunocompromised, so prevention matters more for some readers than others. For the full picture of how this overlaps with sexual transmission, see is mpox an std? how it spreads through sex.
What are the most effective ways to prevent mpox?
There's no single switch you can flip. The strongest protection comes from stacking a few habits together, each one closing a different gap the virus could slip through.
Avoid contact with anyone who has a rash
This is the single most reliable behavioral step. The mpox rash is the most infectious part of the illness, so skip skin-to-skin contact, sexual or otherwise, with anyone who has new or unexplained sores, bumps, or scabs anywhere on the body. Lesions can hide in places you won't notice during a quick glance, including the genitals, anus, and inside the mouth, so a partner saying "I feel fine" doesn't rule it out.
Get vaccinated if you're at increased risk
The two-dose JYNNEOS vaccine is recommended for people at increased risk, with the second dose given after the first CDC. It works like medical PrEP for mpox: you build protection before exposure rather than reacting after. If you're a man who has sex with men, have multiple partners, or expect to be in higher-contact settings, this is the prevention step with the most leverage. We cover eligibility and what the shots are like in our guide to the mpox vaccine.
Don't share fabrics or surfaces with someone who's infectious
The virus survives on contaminated materials, so avoid sharing bedding, towels, clothing, and sex toys with anyone who has mpox until their lesions have fully healed. People overlook this route. You can do everything right with skin contact and still get exposed through a shared sheet.
Reduce partners and anonymous contact during outbreaks
During an active outbreak, fewer partners and fewer anonymous encounters mean fewer chances to touch an infectious rash before anyone knows it's there. This is about exposure odds, not a moral judgment. Pairing it with vaccination gives you two independent layers of protection.
Do condoms prevent mpox?
Condoms help, but they're not enough on their own. They reduce risk for the classic sexually transmitted infections when used every time, and they may lower mpox risk from genital lesions. But the rash often appears on other parts of the body a condom doesn't cover, and infectious respiratory secretions can be present during close face-to-face contact. A condom protects a small slice of skin and leaves chest, arms, hands, mouth, and thighs exposed.
Treat condoms as one piece of a layered approach for mpox. They remain valuable for other infections, so keep using them. For mpox specifically, vaccination and avoiding contact with a rash do far more of the work.
Can testing help prevent mpox?
Testing works differently for mpox than for infections like chlamydia. Mpox is confirmed by detecting viral DNA by PCR from a swab of a suspected lesion, which means there has to be a sore to swab. There's no routine blood screen that catches it before symptoms appear. Testing here confirms an active infection quickly so you can isolate and get treated.
Routine STI testing still belongs in your prevention plan, because the same encounters that transmit mpox can transmit other infections that often have no symptoms at all. If you've had a possible exposure, our guide on mpox testing walks through what the swab is like and when it makes sense, and you can read about when to test after exposure for the infections that do screen reliably. When you're ready, you can get tested for the broader panel.
Vaccines, treatment, and post-exposure options
The JYNNEOS vaccine can be used both before exposure for people at risk and, in some cases, after a known exposure to blunt the illness, with your clinician deciding based on timing and your risk. There's no condom-style barrier or daily pill that prevents mpox the way DoxyPEP reduces certain bacterial STIs, so the vaccine is the main pharmacologic prevention tool.
If prevention fails and you do get mpox, an antiviral called tecovirimat (TPOXX) may be considered for people with severe disease or who are at high risk for it CDC. Most healthy people recover without it, but the option matters if you're immunocompromised.
Putting it all together
No single step is bulletproof, so combine them. Used together, these layers cover the gaps each one leaves on its own:
- Get the two-dose vaccine if you're at increased risk — it's the strongest single move.
- Avoid skin-to-skin contact with anyone who has a rash, sores, or scabs, and check yourself too.
- Don't share bedding, towels, clothes, or toys with someone who's infectious.
- Limit partners and anonymous contact during an active outbreak.
- Keep using condoms for the protection they do offer, while knowing they don't cover the whole rash.
- Stay current on routine STI testing, since one encounter can carry more than one infection.
| Prevention method | How well it works for mpox | Best for |
|---|---|---|
| JYNNEOS vaccine (two doses) | Strong, lasting protection before or shortly after exposure | People at increased risk |
| Avoiding contact with a rash | Very effective — targets the main transmission route | Everyone |
| Not sharing fabrics/surfaces | Closes the contaminated-materials route | Households, partners of infected people |
| Condoms | Partial — misses rash outside the covered area | Layered use with other steps |
| Fewer partners during outbreaks | Reduces exposure odds | People in high-contact settings |
When should you see a clinician?
See a clinician promptly if you develop a new rash, sores, or unexplained bumps — especially on the genitals, anus, or mouth — after close or sexual contact, or after a known mpox exposure. Early evaluation lets them swab a lesion for PCR confirmation and tell you how to isolate so you don't pass it on. Ask about vaccination if you think you've been exposed but don't yet have symptoms, since timing affects whether it can still help.
This diagnosis is common and treatable, and clinics handle it daily. The faster you're seen, the sooner you can stop the spread and get any treatment you might need.