Is MRSA airborne?

MRSA is not airborne. It is not on the list of infections that require airborne isolation, and you do not catch it by breathing the same air as a carrier. Transmission happens through direct skin-to-skin contact and through contaminated surfaces and items — towels, razors, dressings, sports kit, bed rails, door handles. Intact healthy skin is a strong barrier; the risk rises sharply where skin is broken.

Hospitals sort infections into precaution categories, and the words have precise meanings that differ from everyday use.

• Contact precautions — gloves, gown, hand hygiene, and cleaned or dedicated equipment. This is where MRSA sits. It covers touch: the patient's skin, their wound, their bedding, their belongings.
• Droplet precautions — add a surgical mask within a short distance of the patient. Used for infections carried in larger respiratory droplets that fall to the ground quickly. Added for MRSA only when the lungs are involved or a procedure may generate splashes.
• Airborne precautions — a negative-pressure room and a fitted N95 respirator, for tiny particles that stay suspended and can be inhaled deep into the lungs. Reserved for tuberculosis, measles and chickenpox. Not used for MRSA.

Air sampling studies in hospital wards have picked up MRSA in the room air, especially during bed-making, dressing changes and dry sweeping. That is real, but it does not make MRSA an airborne infection. The bacteria are riding on shed skin flakes and dust, which settle onto nearby surfaces within minutes rather than remaining suspended for inhalation. The infection route that follows is still contact — someone touches the contaminated surface, then touches a wound or their nose.

The practical consequence is about cleaning and hand hygiene, not ventilation: damp-dust instead of sweeping, handle laundry gently, and disinfect surfaces near the bed.

The one situation where the air genuinely matters is MRSA pneumonia. A patient with MRSA in the lungs who is coughing can expel respiratory secretions containing the bacteria over short distances. Care teams add a surgical mask on top of contact precautions. Even then it is treated as droplet spread, not airborne, so no negative-pressure room is needed.

• Wash your hands with soap and water, or use alcohol gel, after contact with the person, their bedding or their room.
• Wear gloves for wound care and dispose of old dressings straight into a bag.
• Keep wounds covered with a clean dry dressing while they are draining.
• Don't share personal items — towels, razors, flannels, bar soap, clothing.
• Clean touched surfaces and wash laundry hot, tumble drying where possible.
• Skip the mask for ordinary skin infections; it is not where the risk lies.

Back to is MRSA contagious?, or read about spread at home, in hospitals and in sport.