MRSA (methicillin-resistant staphylococcus) infections are a big problem in hospitals.
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葡萄 = grapes, 球 = ball/sphere, 菌 = bacteria/fungus. Staphylococci cluster together in round groups resembling a bunch of grapes — so Chinese named them 'grape-ball bacteria'. The Greek 'staphylo-' also means bunch of grapes!