Final answer:
MRSA is a dangerous strain of Staphylococcus aureus that is resistant to antibiotics. Vancomycin is considered a drug of last resort for treating MRSA infections.
Step-by-step explanation:
Methicillin-resistant Staphylococcus aureus (MRSA) is a dangerous strain of Staphylococcus aureus that is resistant to certain antibiotics. One of the drugs used to treat MRSA infections is vancomycin, which is considered a drug of last resort. Vancomycin is effective against gram-positive organisms and is used to treat infections caused by pathogens resistant to other antibiotics.