Question

    Which of the following are examples of infectious diseases?

    A Cancer and influenza Correct Answer Incorrect Answer
    B Influenza and allergy Correct Answer Incorrect Answer
    C Allergy and smallpox Correct Answer Incorrect Answer
    D Influenza and smallpox Correct Answer Incorrect Answer

    Solution

    Influenza and smallpox are both infectious diseases caused by viruses. Cancer and allergies, on the other hand, are non-infectious.

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