Which of the following contributes to the virulence of a pathogen?
A) numbers of microorganisms that gain access to a host
B) evasion of host defenses
C) toxin production
D) numbers of microorganisms that gain access to a host and evasion of host defenses
E) numbers of microorganisms that gain access to a host, evasion of host defenses, and toxin production
Answer: E) numbers of microorganisms that gain access to a host, evasion of host defenses, and toxin production
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