Multiple Drug-Resistant Staphylococcus Aureus (MRSA)is a Bacterium That Has Developed

question 29

Essay

Multiple drug-resistant Staphylococcus aureus (MRSA)is a bacterium that has developed resistance to a wide range of antibiotics.Its resistance to penicillin,methicillin,and oxacillin is a result of the serial use of these antibiotics,which created a selective environment that favored resistance to the drug being used at the time.This resistance provides the bacteria with the ability to thrive in an environment with standard antibiotics,thereby making it a dangerous human health hazard.Why would one expect MRSA to retain penicillin resistance even if this antibiotic is rarely used?

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