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Within six months of effectively using methicillin to treat s. Aureus infections in a community, all new s. Aureus infections were caused by mrsa. How can this best be explained?.
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Within six months of effectively using methicillin to treat s. Aureus infections in a community, all new s. Aureus infections were caused by mrsa. How can this best be explained?.

User Zhengyue
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Answer:

Some drug-resistant bacteria were present at the start of treatment, and natural selection increased their frequency.

Step-by-step explanation:

I hope this helps

Have an AMAZING day. :)

User Dan Goldin
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