• 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.