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17 Ιουλ 2023 · These organisms can grow aerobically or anaerobically (facultative) and at temperatures between 18 C and 40 C. Typical biochemical identification tests include catalase positive (all pathogenic Staphylococcus species), coagulase positive (to distinguish Staphylococcus aureus from other Staphylococcus species), novobiocin sensitive (to ...
Staphylococcus aureus is the most dangerous of all of the many common staphylococcal bacteria. These gram-positive, sphere-shaped (coccal) bacteria (see figure ) often cause skin infections but can cause pneumonia, heart valve infections, and bone infections and may be resistant to treatment with some antibiotics.
The coagulase-positive staphylococci constitute the most pathogenic species S aureus. The coagulase-negative staphylococci (CNS) are now known to comprise over 30 other species. The CNS are common commensals of skin, although some species can cause infections.
Coagulase-positive S. aureus is among the most ubiquitous and dangerous human pathogens, for both its virulence and its ability to develop antibiotic resistance. Coagulase-negative species such as S. epidermidis are increasingly associated with hospital-acquired infections; S. saprophyticus causes urinary infections.
The main coagulase-positive staphylococcus is Staphylococcus aureus, although not all strains of Staphylococcus aureus are coagulase positive. These bacteria can survive on dry surfaces, increasing the chance of transmission.
8 Ιαν 2022 · Johns Hopkins ABX Guide. Staphylococcus aureus. Paul G. Auwaerter, M.D. MICROBIOLOGY. Aerobic, Gram-positive cocci [Fig 1], usually seen in clusters. Easily grown on blood agar or other conventional media. S. aureus: coagulase-positive and thermonuclease positive.
15 Απρ 2024 · INTRODUCTION. Staphylococcus aureus is a leading cause of community-acquired and hospital-acquired bacteremia. Issues related to clinical manifestations of S. aureus infection are discussed separately. (See "Clinical manifestations of Staphylococcus aureus infection in adults".)
