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Question
When viable cell concentrations are too high to count on an agar medium, it is most common to use larger sized plates to increase the surface area for counting the colonies.Answer
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Which of the following statements about chlamydial infections is TRUE?
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The Spanish flu of 1918 was caused by an ________ influenza virus.
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Diseases can be controlled through immunization even if the percentage of the population that is immunized is less than 100% because
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B) most diseases lack reservoirs.
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The study of the occurrence, distribution, and determinants of health and disease in a population is the field of
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A) incidence / prevalence
B) prevalence / mortality
C) mortality / morbidity
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Cholera is an example of a pandemic disease that
A) has multiple wild animal reservoirs and is thus difficult to eradicate.
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C) is spread through direct contact and has only a human reservoir.
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C) the vector is seasonal.
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C) four
D) six