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The ability to clot blood by producing coagulase distinguishes the virulent pathogen, Staphylococcus aureus, from the less virulent coagulase-negative staphylococcal species. Coagulase-positive S. aureus is among the most ubiquitous and dangerous human pathogens, for both its virulence and its ability to develop antibiotic resistance.
- Pneumococcal Infections
The positive predictive value (the proportion of patients...
- Enterococcal Infections
Enterococci are gram-positive, facultative anaerobic...
- Toxic Shock Syndrome (Tss)
For methicillin-resistant Staphylococcus aureus Antibiotics...
- Pneumococcal Infections
The catalase test is important in distinguishing streptococci (catalase-negative) staphylococci which are catalase positive. The test is performed by flooding an agar slant or broth culture with several drops of 3% hydrogen peroxide. Catalase-positive cultures bubble at once.
4 Οκτ 2022 · Coagulase-negative staphylococci (CoNS) are part of normal human skin flora [1]. While the virulence of these organisms is relatively low, they can cause clinically significant infections of the bloodstream and other tissue sites.
29 Αυγ 2022 · Staphylococcus aureus and the several members of the Staphylococcus hyicus–intermedius group comprise the coagulase-positive staphylococcal species, while all remaining staphylococcal species are classified as coagulase negative.
1 Ιαν 2018 · Staphylococci continue to be the leading cause of many human infections. Along with S. aureus and other coagulase-positive strains, whose pathogenicity and mechanisms of virulence are well elucidated, the coagulase negative species has recently garnered more attention. Albeit less virulent than coagulase-positive isolates (they express a ...
17 Ιουλ 2023 · Staphylococcus aureus is a gram-positive bacteria that cause a wide variety of clinical diseases. Infections caused by this pathogen are common both in community-acquired and hospital-acquired settings. The treatment remains challenging due to the emergence of multi-drug resistant strains such as MRSA (Methicillin-Resistant Staphylococcus aureus).
13 Ιουλ 2024 · Coagulase-negative staphylococci (CoNS) are aerobic, Gram-positive coccus occurring in clusters [Fig]. Predominantly found on the skin and mucous membranes. Catalase positive but coagulase negative (S. aureus is coagulase positive).
