• 2022-06-06
    Which one of the following is a fundamental principle of viral disease causation?
    A: One virus type induces a single disease syndrome.
    B: Many viral infections are subclinical and do not produce clinical disease.
    C: The type of disease produced by a virus can be predicted by the morphology of that virus.
    D: A particular disease syndrome has a single viral cause.
    E: Social factors do not influence the occurrence of viral diseases.
  • B

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    • 1

      Fill the blanks with the words given below. Change the form where necessary.nausea/ symptom/ infectious/ viral/ contaminate/ cough/ complication1.Influenza is an ( ) disease caused by an influenza virus.

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    • 3

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