Question

    When was the H5N1 virus, which causes bird flu, first

    discovered?
    A 1991 Correct Answer Incorrect Answer
    B 1995 Correct Answer Incorrect Answer
    C 1997 Correct Answer Incorrect Answer
    D 2001 Correct Answer Incorrect Answer

    Solution

    The H5N1 virus, responsible for causing bird flu, was first identified in humans in Hong Kong in 1997.

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