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Lancet. 2006 Sep 2;368(9538):874-85.

Emergence and resurgence of meticillin-resistant Staphylococcus aureus as a public-health threat.

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  • 1Centre for Infectious Diseases Epidemiology, National Institute for Public Health and the Environment, Bilthoven, The Netherlands.

Abstract

Staphylococcus aureus is a gram-positive bacterium that colonises the skin and is present in the anterior nares in about 25-30% of healthy people. Dependent on its intrinsic virulence or the ability of the host to contain its opportunistic behaviour, S aureus can cause a range of diseases in man. The bacterium readily acquires resistance against all classes of antibiotics by one of two distinct mechanisms: mutation of an existing bacterial gene or horizontal transfer of a resistance gene from another bacterium. Several mobile genetic elements carrying exogenous antibiotic resistance genes might mediate resistance acquisition. Of all the resistance traits S aureus has acquired since the introduction of antimicrobial chemotherapy in the 1930s, meticillin resistance is clinically the most important, since a single genetic element confers resistance to the most commonly prescribed class of antimicrobials--the beta-lactam antibiotics, which include penicillins, cephalosporins, and carbapenems.

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PMID:
16950365
[PubMed - indexed for MEDLINE]
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