Staphylococcus aureus (MRSA)


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General Information

Gram positive cocci in clusters, coagulase positive

Can be broadly divided into health-care associated (HA) and community associated (CA).

HA-MRSA is associated with many hospital associated infections ranging from minor/severe skin and soft tissue infections to bloodstream infections and severe pneumonia. It also causes many device associated infection and prosthetic infections.

CA-MRSA is associated with skin and soft tissue infections (e.g. abscesses) and necrotizing pneumonias. However, it can also cause many severe infections as with HA-MRSA.

Injection drug use is an important risk factor for MRSA.

Can cause a wide range of clinical syndromes

  • Pyogenic skin and soft tissue infection

  • Osteomyelitis

  • Endocarditis

  • Abscess

  • Cellulitis

  • Pneumonia

  • Empyema

  • Infection of prosthetic devices

  • Others

  • Enhanced M Contact Precautions

  • Contact/Droplet precautions for MRSA pneumonia