Final answer:
Vancomycin is considered appropriate for the treatment of methicillin-resistant Staphylococcus aureus (MRSA) infections.
Step-by-step explanation:
The appropriate use of vancomycin according to the Centers for Disease Control (CDC) guidelines is for the treatment of methicillin-resistant Staphylococcus aureus (MRSA) infections. MRSA is a type of staph infection that is resistant to many antibiotics, but vancomycin is still effective against it. This antibiotic is considered one of the last lines of defense for treating these types of infections.