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Enterotoxins are ________.


A) virulence factors
B) toxins that target the intestines
C) proteins
D) exotoxins
E) All of the choices are correct.

F) B) and E)
G) A) and E)

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When an infected person is in the incubation period, that person cannot transmit the pathogen to others.

A) True
B) False

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If an infectious disease emerged that was highly contagious and virulent, resulting in certain death with no known cure, epidemiological data would show


A) a high incidence and low prevalence.
B) a low incidence and high prevalence.
C) both incidence and prevalence to be high.
D) both incidence and prevalence to be low.

E) B) and D)
F) B) and C)

Correct Answer

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In a comparison of two pathogens, organism A has an infectious dose of 200,000 organisms, whereas organism B has an infectious dose of 15 organisms. This means that organism A is much more pathogenic than organism B.

A) True
B) False

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The minimum amount of microbes in the inoculating dose is the ________.


A) virulence factor
B) indigenous biota
C) infectious dose
D) endotoxin
E) minimal dose

F) A) and E)
G) A) and C)

Correct Answer

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The number of persons afflicted with an infectious disease is the ________ rate.


A) morbidity
B) mortality
C) incidence
D) endemic
E) pandemic

F) B) and D)
G) A) and C)

Correct Answer

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Rabies is an example of this type of infection, which is indigenous to animals but naturally transmissible to humans ________.


A) mixed infection
B) focal infection
C) zoonotic infection
D) latent infection

E) All of the above
F) C) and D)

Correct Answer

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