MMRSA Guide
Microscopic illustration of MRSA (Staphylococcus aureus) bacteria
Reference · Is MRSA contagious?

Is MRSA contagious?

Yes — but by contact, not casually through the air. MRSA travels on skin, on wounds and on shared objects, which is why the practical answer changes depending on where you are: a hospital ward, your own home, a locker room or a bed.

Reviewed and updated by the MRSA Guide editorial team.

The short answer

MRSA is contagious. It spreads mainly through direct skin-to-skin contact and through contaminated objects — towels, razors, sports kit, dressings, bed rails. It does not usually spread through the air, and intact healthy skin is a strong barrier. Risk rises when skin is broken and when people share personal items in close quarters.

Colonisation versus infection

Around one in three people carry Staphylococcus aureus harmlessly on the skin or in the nose; roughly 1–2% carry MRSA specifically. Carriers feel completely well but can still pass the bacteria on, and are more likely to infect themselves if their skin barrier is broken. This is why household clusters happen even when only one person ever develops a boil.

How long it stays contagious

Treat an open or draining wound as contagious until it is covered, dry and healing — normally at least 24–48 hours after starting an effective antibiotic, and ideally until the wound has closed. Colonisation is different: it can persist for months after the infection has gone, and only clears naturally or with a decolonisation course.

Where you catch it — and how to stop it

The transmission routes are the same everywhere; the practical precautions are not. These four guides cover the settings where MRSA actually moves between people.

MRSA bacteria: what it is and how it gets into the body

The organism, resistance, and the routes it uses to enter the body.

Hospitals & surgery

Hand hygiene, chlorhexidine bathing, screening and surgical prophylaxis.

At home & family

Wound care, laundry, cleaning and shared items.

Sports & locker rooms

Skin checks, covered wounds and cleaning shared gear.

Intimacy & sexual transmission

Skin-to-skin risk and when to abstain.

Frequently asked questions

Is MRSA contagious?
Yes. MRSA passes from person to person mainly through direct skin-to-skin contact, or by touching an object a carrier has touched — towels, razors, athletic gear, bandages or medical equipment. It is far less contagious than a cold or flu because it does not usually travel through the air, but one contact with broken skin can be enough.
How contagious is MRSA?
Moderately. Healthy intact skin is a very effective barrier, so casual contact rarely leads to infection. Risk climbs sharply where there are cuts, grazes, eczema or surgical wounds, and where people are crowded together and share personal items — gyms, locker rooms, households, care homes, prisons and hospital wards.
How long is MRSA contagious?
An active skin infection is treated as contagious for as long as the wound is draining or has not fully healed. People who are colonised — carrying MRSA on the skin or in the nose with no symptoms — can pass it on for months or even years until decolonisation or natural clearance.
How long is MRSA contagious after starting antibiotics?
Antibiotics lower transmission risk but do not end it immediately. Most clinicians treat a draining lesion as contagious until it has been covered and dry for at least 24–48 hours on effective therapy, and ideally until the wound has fully closed.
When is MRSA not contagious anymore?
Generally once the wound has healed, drainage has stopped and any prescribed antibiotic course is complete. Colonisation can outlast the infection, which is why decolonisation — nasal mupirocin plus chlorhexidine washes — is offered when infections keep returning.
Is MRSA contagious through the air?
Airborne spread is uncommon. The exception is MRSA pneumonia, where respiratory droplets can carry the bacteria. For ordinary MRSA skin and soft-tissue infections you do not catch it by breathing the same air as someone who has it.
How long does MRSA survive on surfaces?
MRSA can persist on dry surfaces for days to weeks — commonly quoted as 2–10 days on bed rails, gym equipment, door handles and fabrics, and longer in some laboratory conditions. Routine cleaning with a household disinfectant, and hot washing and tumble drying of laundry, removes it.
Is MRSA in the blood or lungs contagious?
Invasive MRSA — in the bloodstream, bone or lungs — is not spread by being near the patient. The risk to others still comes from the skin, wounds, catheters and respiratory secretions, which is why hospitals use contact precautions rather than airborne isolation for most cases.

Related reading

See also how MRSA spreads in the home, the prevention hub for decolonisation, and MRSA symptoms.

References
  1. CDC. MRSA: how it spreads and who is at risk (2024)
  2. NHS. MRSA — causes, spread and prevention (2023)
  3. Kramer A. et al., BMC Infectious Diseases. How long do nosocomial pathogens persist on inanimate surfaces? (2006)
  4. Liu C. et al., IDSA. Clinical practice guidelines for the treatment of MRSA infections (2011)
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