Breaks in the skin, saliva, reproductive secretions, and blood are examples of
a. pathogens.
b. components in the chain of infection.
c. portals of exit.
d. susceptible hosts.
C
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A Pathogens are disease-causing microorganisms.
B There are six components of the infection cycle.
C Correct.
D A susceptible host is the source, such as a human who accepts the pathogen.
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