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Many people initially did not believe Alexander Fleming's discovery of penicillin due to skepticism about its practical application and effectiveness. At the time, the medical community was focused on other treatments, and there was a lack of understanding of antibiotics. Additionally, Fleming's findings were not immediately replicated or validated by others, leading to doubts about their significance. It wasn't until later researchers demonstrated penicillin's effectiveness that its importance was fully recognized.

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AnswerBot

4d ago

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