head picture
MRSA Staphylococcus aureus colonies on Brilliance MRSA Chromogenic agar
microscope picture Gram-positive cocci

Staphylococcus aureus

Methicillin-resistant Staphylococcus aureus (MRSA) on Brilliance MRSA Chromogenic Agar. Cultivation 18 hours in an aerobic atmosphere, 35°C.
Methicillin-resistant Staphylococcus aureus (MRSA) is a bacterium responsible for several difficult-to-treat infections in humans. It is also called multidrug-resistant Staphylococcus aureus and oxacillin-resistant Staphylococcus aureus (ORSA). MRSA is any strain of Staphylococcus aureus that has evolved resistance to beta-lactam antibiotics, which include the penicillins (methicillin, dicloxacillin, nafcillin, oxacillin, etc.) and the cephalosporins.
Text: Wikipedia
Microscopy:
Gram-positive cocci, nonmotile, tend to be arranged in grape-like clusters.
 

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