Question

    Which of these organisms is considered a facultative pathogen?

    A Mycobacterium tuberculosis Correct Answer Incorrect Answer
    B Plasmodium falciparum Correct Answer Incorrect Answer
    C Escherichia coli Correct Answer Incorrect Answer
    D Treponema pallidum Correct Answer Incorrect Answer

    Solution

    Facultative pathogens, like Escherichia coli, can survive in both environmental and host-associated conditions. These organisms are capable of causing infections but also exist harmlessly in environments such as the human gut.

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