Which statement correctly expands MRSA?

Which statement correctly expands MRSA?

• A. Methicillin Resistant Staphylococcus Aureus
• B. Methicillin Resistant Staphylococcus Aureus Bacterium
• C. Methicillin Sensitive Staphylococcus Aureus
• D. Methicillin Resistant Streptococcus Aureus

Answer: (A)

MRSA stands for Methicillin-Resistant Staphylococcus aureus, describing a strain of the bacterium Staphylococcus aureus that has acquired resistance to methicillin and related beta-lactam antibiotics. The genus is Staphylococcus, and the species name is aureus (written with a lowercase l). The expansion that adds the word “Bacterium” is not how the acronym is typically expressed, and the option using “Methicillin Sensitive” refers to a different strain (MSSA). Using Streptococcus would reference a different genus entirely. So the correct expansion is Methicillin-Resistant Staphylococcus aureus.

MRSA stands for Methicillin-Resistant Staphylococcus aureus, describing a strain of the bacterium Staphylococcus aureus that has acquired resistance to methicillin and related beta-lactam antibiotics. The genus is Staphylococcus, and the species name is aureus (written with a lowercase l). The expansion that adds the word “Bacterium” is not how the acronym is typically expressed, and the option using “Methicillin Sensitive” refers to a different strain (MSSA). Using Streptococcus would reference a different genus entirely. So the correct expansion is Methicillin-Resistant Staphylococcus aureus.