HSS 3305 Chapter Notes - Chapter 10: Sexually Transmitted Infection, T Helper Cell, Passive Immunity
16 Feb 2019
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31. 01. 19 communicable disease: infectious disease transmitted from person to person: requires continuous transmission of infectious agent from person to person, to eradicate or control disease chain of transmission must be broken at some point. Methods of transmission: direct transmission direct physical contact, by contact with a contaminated inanimate object (fomite), or by means of droplet spread, such as by coughing or sneezing. Indirect transmission via intermediary mechanism, such as transmission in contaminated water or by means of insects. Methods of control multiple methods of control are applied when possible. Active immunization exposing person to killed or non-infectious form of pathogen. Ebola virus spread by viremic body fluids: first sign fever followed by gastrointestinal symptoms. Index of disease progression measurement of viral rna and cd4 lymphocyte: the amny of viral rna in blood reflects the extent of viral replication in lymphoid tissue in body.
