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+ | <p>Due to antibiotic overuse, <i>Staphylococcus aureus</i> develops resistance to various antibiotics and it becomes increasingly difficult to be eliminated. As a leading cause of hospital-acquired infections, methicillin-resistant <i>S. aureus</i> (MRSA) strains are multi-antibiotic resistant. Even the use of vancomycin — one of the last therapeutic resorts against <i>S. aureus</i>, becomes futile. Worse still, community-acquired MRSA strains are much more virulent and cause more morbidity and mortality than hospital-acquired MRSA.</p> | ||
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Revision as of 14:49, 6 August 2017
Overview
S. aureus Intestinal Colonization
Human intestine is a highly complex microbial ecosystem. It accommodates commensal microflora species, various types of secretory fluids, fermentation metabolites and host defense molecules that promote colonization resistance to pathogenic bacteria. However, Staphylococcus aureus, one of the most opportunistic and invasive pathogens, is capable of disrupting this colonization resistance and infecting the intestine. Patients with S. aureus intestinal colonization suffer from fecal incontinence, diarrhea, pseudomembranous colitis and so on.
Antibiotic Overuse and Superbacteria
Due to antibiotic overuse, Staphylococcus aureus develops resistance to various antibiotics and it becomes increasingly difficult to be eliminated. As a leading cause of hospital-acquired infections, methicillin-resistant S. aureus (MRSA) strains are multi-antibiotic resistant. Even the use of vancomycin — one of the last therapeutic resorts against S. aureus, becomes futile. Worse still, community-acquired MRSA strains are much more virulent and cause more morbidity and mortality than hospital-acquired MRSA.