Methicillin-resistant Staphylococcus aureus (MRSA)

Definition

Methicillin-resistant Staphylococcus aureus (MRSA) is a type of bacteria that is resistant to several widely used antibiotics, making it difficult to treat. It is a common cause of hospital-acquired infections and can lead to severe health complications.

5 Must Know Facts For Your Next Test

1. MRSA is resistant to methicillin and other beta-lactam antibiotics, including penicillins and cephalosporins.
2. It can cause a variety of infections ranging from skin and soft tissue infections to more severe infections such as pneumonia or bloodstream infections.
3. MRSA is often transmitted through direct contact with an infected wound or by sharing personal items that have been in contact with infected skin.
4. Healthcare-associated MRSA (HA-MRSA) occurs in medical settings, while community-associated MRSA (CA-MRSA) occurs among healthy people outside hospitals.
5. Prevention strategies include proper hand hygiene, wound care, and avoiding sharing personal items.

Review Questions

Related terms

Staphylococcus aureus:

A type of bacteria commonly found on the skin and respiratory tract, which can cause various infections.

Antibiotic Resistance: The ability of bacteria to withstand the effects of an antibiotic that once could successfully treat the infection caused by them.

Nosocomial Infection: An infection acquired in a hospital or healthcare setting.