- Staphylococci (Staph): clustered gram-positive beta-hemolytic bacteria. S. aureus (SA) is coagulase positive.
- Coagulase-negative Staph (CoNS): >30 species, 15 of which are human pathogens. S. epidermidis, S. saprophyticus (novobiocin resistant), S. haemolyticus, S. lugdunensis, & S. schleiferi are most commonly isolated.
- SA produces several toxins, including enterotoxins, epidermolytic toxins, & toxic shock syndrome toxins (TSST)
- Staph grow rapidly on blood agar and other non-selective media. They can survive harsh environmental conditions, high salt media, & are relatively heat-resistant.
- Methicillin resistance: >80% of CoNS, and an increasing number of both hospital acquired & community acquired SA (MRSA) encompasses all B-lactam antibiotics, including cephalosporins. Vancomycin-intermediate resistance (VISA) and vancomycin-resistant strains have emerged.
Staphylococcus spp. was found in Johns Hopkins HIV Guide.
If you are a registered user, please log in below.
If not, learn more about gaining full access.
- Johns Hopkins Guides include up-to-date, authoritative content to help you treat patients and raise the standard of care.
Try these free topics now!
Johns Hopkins ABX Guide
Johns Hopkins Diabetes Guide
Johns Hopkins HIV Guide