Methicillin-Resistant Staphylococcus Aureus (MRSA) Infection: Causes, Symptoms, and Treatment Options

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Methicillin-Resistant Staphylococcus aureus (MRSA) Infection


Methicillin-resistant Staphylococcus aureus (MRSA) is a type of staph bacteria that has become resistant to many antibiotics, including methicillin. MRSA infections are serious and can be difficult to treat. They can cause a variety of symptoms, including skin and soft tissue infections, pneumonia, and bloodstream infections.


MRSA is caused by the bacterium Staphylococcus aureus (staph). Staph bacteria are commonly found on the skin and in the nose of healthy people. However, some strains of staph have become resistant to antibiotics, including methicillin. These strains are called MRSA.

MRSA is spread through contact with an infected person or object. It can also be spread through contact with contaminated surfaces, such as countertops, doorknobs, and medical equipment.

Risk Factors

Anyone can get a MRSA infection, but certain people are at higher risk, including:

  • People who are hospitalized
  • People who have weakened immune systems
  • People who have had recent surgery
  • People who live in crowded conditions
  • People who inject drugs


The symptoms of a MRSA infection depend on the location of the infection. Skin and soft tissue infections are the most common type of MRSA infection. These infections can cause:

  • Redness
  • Swelling
  • Pain
  • Pus or drainage
  • Fever

MRSA can also cause pneumonia, which can cause:

  • Cough
  • Fever
  • Chills
  • Shortness of breath

MRSA can also cause bloodstream infections, which can cause:

  • Fever
  • Chills
  • Sweats
  • Confusion


A MRSA infection is diagnosed with a culture of the bacteria. A culture is a test that grows the bacteria in a laboratory. The culture can be taken from a wound, a sputum sample, or a blood sample.


MRSA infections are treated with antibiotics that are effective against MRSA. These antibiotics include:

  • Vancomycin
  • Daptomycin
  • Linezolid
  • Tedizolid
  • Oritavancin

The length of treatment depends on the severity of the infection.


There are several things you can do to prevent MRSA infections, including:

  • Wash your hands frequently with soap and water.
  • Avoid touching your eyes, nose, and mouth.
  • Cover any open wounds with a bandage.
  • Clean and disinfect surfaces that may be contaminated.
  • Avoid sharing personal items, such as towels and razors.
  • Get vaccinated against staph infections.


MRSA infections can lead to a number of complications, including:

  • Sepsis
  • Toxic shock syndrome
  • Necrotizing fasciitis
  • Pneumonia
  • Bloodstream infections

These complications can be life-threatening.


The outlook for people with MRSA infections depends on the severity of the infection and the person’s overall health. With early diagnosis and treatment, most people can recover from a MRSA infection. However, some people may develop serious complications.


MRSA is a serious infection that can be difficult to treat. However, there are several things you can do to prevent MRSA infections, including washing your hands frequently, avoiding touching your eyes, nose, and mouth, and covering any open wounds with a bandage.

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