File:Methicillin-resistant Staphylococcus aureus 10048.jpg

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English: This 2005 scanning electron micrograph (SEM) depicted numerous clumps of methicillin-resistant Staphylococcus aureus bacteria, commonly referred to by the acronym, MRSA; Magnified 2381x.

Recently recognized outbreaks, or clusters of MRSA in community settings have been associated with strains that have some unique microbiologic and genetic properties, compared with the traditional hospital-based MRSA strains, which suggests some biologic properties, e.g., virulence factors like toxins, may allow the community strains to spread more easily, or cause more skin disease. A common strain named USA300-0114 has caused many such outbreaks in the United States. See PHIL 7823 for a black and white version of this micrograph.

Staphylococcus aureus bacteria are found on the skin of all individuals. However, MRSA is a strain of these bacteria that has become resistant to certain antibiotics. These antibiotics include methicillin and other more common antibiotics such as oxacillin, penicillin and amoxicillin. Staph infections, including MRSA, occur most frequently among persons in hospitals and healthcare facilities (such as nursing homes and dialysis centers) who have weakened immune systems, however, the manifestation of MRSA infections that are acquired by otherwise healthy individuals, who have not been recently hospitalized, or had a medical procedure such as dialysis, or surgery, first began to emerged in the mid- to late-1990's. These infections in the community are usually manifested as minor skin infections such as pimples and boils. Transmission of MRSA has been reported most frequently in certain populations, e.g., children, sports participants, or jail inmates.
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This media comes from the Centers for Disease Control and Prevention's Public Health Image Library (PHIL), with identification number #10048. Note: Not all PHIL images are public domain; be sure to check copyright status and credit authors and content providers.

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Author CDC / Jeff Hageman, M.H.S. / Janice Haney Carr
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This image is a work of the Centers for Disease Control and Prevention, part of the United States Department of Health and Human Services, taken or made as part of an employee's official duties. As a work of the U.S. federal government, the image is in the public domain.

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current14:53, 15 June 2010Thumbnail for version as of 14:53, 15 June 20102,835 × 1,927 (4.09 MB)Raeky (talk | contribs){{Information |Description={{en|1=This 2005 scanning electron micrograph (SEM) depicted numerous clumps of methicillin-resistant Staphylococcus aureus bacteria, commonly referred to by the acronym, MRSA; Magnified 2381x. Recently recognized outbreaks, or
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