MRSA is a serious, potentially fatal, bacterial infection. Get medical care at the first signs of MRSA.
Medically reviewed by Dean Blumberg, M.D. on Aug. 25, 2023.
Not all methicillin-resistant Staphylococcus aureus (MRSA) skin infections will cause severe symptoms, but it’s important to get medical care at the first signs of MRSA. The infectious disease specialists at UC Davis Health manage common and complex diseases such as MRSA, with a focus on preventing complications.
Methicillin-resistant Staphylococcus aureus (MRSA) is a serious, contagious bacterial infection that starts on your skin. It’s a type of staph infection that resists most common antibiotics, making it especially dangerous. Without treatment, MRSA can be deadly.
MRSA can get deeper into your body and infect your blood, bones, lungs and joints:
Anyone can get MRSA, but it is more common in health care settings such as nursing homes or hospitals. It can also affect people who are in close physical contact with others, such as athletes and military personnel.
MRSA symptoms may be mild or severe.
MRSA symptoms might resemble a spider bite or allergic skin reaction at first. Look for:
MRSA can lead to sepsis, a life-threatening medical emergency. Go the nearest emergency room if you have:
MRSA is the result of a Staphylococcus aureus infection. Staphylococcus aureus is a type of bacteria. MRSA is communicable, meaning it can spread from person to person through touch. MRSA may remain on your skin and not cause any problems. But if MRSA enters a wound or other opening in your skin, it can infect your blood, bones, joints and organs.
MRSA can develop in surgical wounds or sores.
You can get MRSA by touching someone with infected skin or an infected wound.
MRSA can spread through medical equipment like catheters and needles. You can also get it from everyday items such as towels, utensils, razors or bed sheets.
MRSA can enter your bloodstream through shared needles when injecting drugs. People who inject drugs are 16 times more likely to contract MRSA.
You may be at higher risk for developing MRSA if you have any of these risk factors.
People who have been hospitalized, had surgery or stayed for prolonged periods in nursing or rehabilitation facilities are more likely to get MRSA.
People discharged from the hospital with catheters or other access lines for medical treatments, such as dialysis or chemotherapy, are at a higher risk for MRSA.
Workers who come into contact with groups of people or animals, such as military personnel, teachers, daycare workers, healthcare employees and livestock workers, are at increased risk for MRSA.
Athletes who play sports with heavy physical contact, such as football and wrestling, are at risk. You can also get MRSA from locker rooms and shared sports equipment.
People who have lower immune systems due to older age or conditions such as HIV or leukemia are more susceptible to MRSA.
We diagnose MRSA by testing a sample of fluid or tissue. We may test your blood or urine or take a swab from a wound or your nostril. We look for the presence of MRSA bacteria.
Results of the MRSA test typically take about 48 hours to come back. Your provider may order a newer type of MRSA test that takes as little as five hours if they think you need immediate treatment.
MRSA is treated differently from other infections because the bacteria are resistant to most antibiotics. The treatment you receive will depend on the severity of your symptoms and how MRSA is affecting your body.
High doses of oral or intravenous antibiotics may be effective for MRSA. However, your provider will choose the antibiotics carefully – the wrong medication can further increase the bacteria’s antibiotic resistance. We may also recommend antibiotics if you have pneumonia, endocarditis or osteomyelitis.
In some cases, we make a cut in your skin at the site of the infection. We drain infected pus from the area and cover the wound with a bandage. Drainage from the wound is infectious, so it is very important to keep the incision covered at all times.
Debridement is a procedure that removes damaged or dead tissue from your body. We may need to do debridement if MRSA is deep inside your body. Some people need multiple debridement procedures over the course of several weeks or months.
You can take steps to reduce your risk of contracting or spreading MRSA.
Avoid sharing razors, towels, bed sheets and other items that could be contaminated with MRSA.
Clean and cover scrapes, cuts or other wounds with clean bandages until they have healed.
Healthcare workers should take appropriate precautions to prevent the spread of MRSA by wearing gloves, gowns and masks when appropriate.
Clean your hands often using soap, water and alcohol-based sanitizer.
“Methicillin-resistant Staphylococcus aureus (MRSA): General Information,” Centers for Disease Control and Prevention (CDC), https://www.cdc.gov/mrsa/community/index.html
5%Hospitalized patients in the U.S. carry MRSA
70K+Severe MRSA infections in the U.S. each year
<9KPeople die each year due to MRSA
Sources: Centers for Disease Control and Prevention (CDC): Methicillin-resistant Staphylococcus aureus (MRSA): General Information.
CDC: Methicillin-resistant Staphylococcus aureus (MRSA): Preventing Infections in Healthcare
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