Nature Medicine | Spoonful of Medicine

MRSA’s killing potential explained, providing a new drug target to halt the superbug

Since it first arose more than 50 years ago, the methicillin-resistant staph infection known as MRSA has ravaged hospital wards around the globe, causing untreatable, often lethal, infections in people already weakened by disease. As with most cases of antibiotic resistance, the rise of the first MRSA bacteria was the fault of humans. The Staphylococcus aureus bacterium, which causes everything from respiratory infections to meningitis, mutated to become resistant to all the first-line drugs used to treat it—first penicillin, and later methicillin and other drugs known as beta-lactams. 


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