Chapter 89: Staphylococcal Infections

MICROBIOLOGY

Staphylococci are gram-positive cocci that form grapelike clusters on Gram’s stain; they are catalase positive (unlike streptococci), nonmotile, aerobic, and facultatively anaerobic. Staphylococcus aureus, which is distinguished from other staphylococci by its production of coagulase, is the most virulent species.

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