A student nurse asks if an infectious disease is the same thing as a communicable disease. The nurse explains that an infectious disease is not necessarily a communicable disease
Which must a communicable disease have that an infectious disease does not have to have? (Select all that apply.)
A) Pathogenic microorganism
B) Portal of exit from the infected person
C) Means of transmission
D) Portal of entry to a susceptible host
E) Organism that harbors the infectious agent
Ans: B, C, D
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An infectious disease in a human host is one caused by the growth of pathogenic microorganisms in the body. For a disease to be communicable, or contagious, there must be a portal of exit from the infected person (or animal), a means of transmission, and a portal of entry to a susceptible host. Thus, an infectious disease need not be contagious, or communicable.
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