Which antibiotic is often prescribed to treat skin infections caused by staphylococci and streptococci?

Clindamycin is frequently prescribed for skin infections caused by staphylococci and streptococci due to its strong activity against these particular bacteria. It is especially effective against some strains of Staphylococcus aureus, including methicillin-resistant Staphylococcus aureus (MRSA), making it a valuable option in treatment protocols. Clindamycin works by inhibiting bacterial protein synthesis, which is crucial for bacterial growth and reproduction, thus effectively treating the infection.

Other antibiotics listed may have roles in treating various infections, but they are not as focused or effective against the bacterial strains commonly responsible for skin infections. For example, macrolides are typically used for respiratory infections and may not be as effective against skin pathogens, while penicillin is often less effective against resistant strains of Staphylococcus. Tetracyclines have their place in treating specific infections but may not be the first choice for skin infections caused specifically by the mentioned bacteria.