Which of the following would be a sign of an infection?
a) muscle aches
b) headache
c) fever
d) nausea - c) fever
Which of the following is an example of a noncommunicable infectious disease?
a) infection with a respiratory virus
b) food poisoning due to a preformed bacterial toxin in food
c) skin infection acquired from a dog bite
d) infection acquired from the stick of a contaminated needle - b) food poisoning due to a preformed
bacterial toxin in food
During an oral surgery, the surgeon nicked the patient's gum with a sharp instrument. This allowed
Streptococcus, a bacterium normally present in the mouth, to gain access to the blood. As a result, the
patient developed bacterial endocarditis (an infection of the heart). Which type of disease is this?
a) iatrogenic
b) nosocomial
c) vectors
d) zoonotic - a) iatrogenic
Which period is the stage of disease during which the patient begins to present general signs and
symptoms?
a) convalescence
b) incubation
c) illness
d) prodromal - d) prodromal
, A communicable disease that can be easily transmitted from person to person is which type of disease?
a) contagious
b) iatrogenic
c) acute
d) nosocomial - a) contagious
Which of the following is a pathogen that could not be identified by the original Koch's postulates?
a) Staphylococcus aureus
b) Pseudomonas aeruginosa
c) Human immunodeficiency virus
d) Salmonella enterica serovar Typhimurium - c) Human immunodeficiency virus
Pathogen A has an ID50 of 50 particles, pathogen B has an ID50 of 1,000 particles, and pathogen C has
an ID50 of 1 × 106 particles. Which pathogen is most virulent?
a) pathogen A
b) pathogen B
c) pathogen C - a) pathogen A
Which of the following choices lists the steps of pathogenesis in the correct order?
Which of the following would be a virulence factor of a pathogen?
a) a surface protein allowing the pathogen to bind to host cells
b) a secondary host the pathogen can infect
c) a surface protein the host immune system recognizes
d) the ability to form a provirus - a) a surface protein allowing the pathogen to bind to host cells
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