Question 1

Pseudomonas bacteria colonized the bile duct of a patient following his liver transplant surgery. This is an example of a

Accepted Answer

A)   latent infection.
B)   communicable disease.
C)   nosocomial infection.
D)   sporadic disease.
E)   None of the answers is correct.F) A) and E)
G) A) and B)

Question 2

Which one of the following does NOT contribute to the incidence of nosocomial infections?

Accepted Answer

A)   gram- negative cell walls
B)   antibiotic resistance
C)   lack of handwashing
D)   lapse in aseptic techniques
E)   lack of insect controlF) A) and B)
G) A) and C)

Question 3

The etiologic agent of the disease in Situation 14.1 is

Accepted Answer

A)   soil.
B)   wind.
C)   sheep.
D)   pneumonia.
E)   Coxiella burnetii.F) All of the above
G) B) and E)

Question 4

Which of the following statements about biological transmission is FALSE?

Accepted Answer

A)   The pathogen may require the vector as a host.
B)   The pathogen may be injected by the bite of the vector.
C)   The pathogen reproduces in the vector.
D)   The pathogen may enter the host in the vector's feces.
E)   Houseflies are an important vector.F) A) and E)
G) A) and B)

Question 5

Which of the following is a fomite?

Accepted Answer

A)   a hypodermic needle
B)   insects
C)   water
D)   droplets from a sneeze
E)   pusF) B) and C)
G) A) and B)

Question 6

Urinary tract infections are the most common forms of nosocomial infections.

Accepted Answer

A) True 
 B)False

Question 7

A needlestick is an example of

Accepted Answer

A)   droplet transmission.
B)   vector.
C)   fomite.
D)   vehicle transmission.
E)   direct contact.F) A) and B)
G) A) and E)

Question 8

Which of the following definitions is INCORRECT?

Accepted Answer

A)   epidemic: a disease that is endemic across the world
B)   endemic: a disease that is constantly present in a population
C)   incidence: number of new cases of a disease
D)   pandemic: a disease that affects a large number of people in the world in a short time
E)   sporadic: a disease that affects a population occasionallyF) C) and D)
G) A) and E)

Question 9

Dengue fever, a zoonotic disease, is endemic in northern Mexico, but not in the U.S. Provide two plausible explanations for this dichotomy, and explain.

Accepted Answer

There are two plausible explanations for...

Question 10

Which of the following is NOT a predisposing factor of disease?

Accepted Answer

A)   occupation
B)   climate
C)   genetic background
D)   lifestyle
E)   None of the answers are correct; all of these are predisposing factors of disease.F) A) and B)
G) D) and E)

Question 11

A host is not considered diseased until an infection changes one's state of health.

Accepted Answer

A) True 
 B)False

Question 12

The rise in herd immunity amongst a population can directly attributed to

Accepted Answer

A)   antibiotic- resistant microorganisms.
B)   improved handwashing.
C)   vaccinations.
D)   increased use of antibiotics.
E)   None of the answers is correct.F) B) and E)
G) A) and E)

Question 13

Which of the following can contribute to postoperative infections?

Accepted Answer

A)   using syringes more than once
B)   errors in aseptic technique
C)   antibiotic resistance
D)   normal microbiota on the operating room staff
E)   All of the answers are correct.F) A) and B)
G) A) and C)

Question 14

Compromised hosts are always suffering from suppressed immune systems.

Accepted Answer

A) True 
 B)False

Question 15

Which of the following diseases is NOT spread by droplet infection?

Accepted Answer

A)   the common cold
B)   measles
C)   tuberculosis
D)   botulism
E)   diphtheriaF) A) and B)
G) D) and E)

Question 16

Figure 14.1
 
-Figure 14.1 shows the incidence of influenza during a typical year. Which letter on the graph indicates the endemic level?

Accepted Answer

A)   a
B)   b
C)   c
D)   d
E)   The answer cannot be determined based on the information provided.F) All of the above
G) A) and C)

Question 17

Emergence of infectious diseases can be attributed to all of the following EXCEPT

Accepted Answer

A)   new strains of previously known agents.
B)   antibiotic resistance.
C)   ease of travel.
D)   climatic changes.
E)   None of the answers is correct; the emergence of infectious diseases can be attributed to all of these.F) A) and B)
G) D) and E)

Question 18

Which of the following is NOT an example of microbial antagonism?

Accepted Answer

A)   bacteria producing vitamin K
B)   bacteriocin production
C)   bacteria occupying host receptors
D)   bacteria causing disease
E)   acid production by bacteriaF) C) and D)
G) A) and B)

Question 19

The CDC is located in

Accepted Answer

A)   Washington, DC.
B)   New York City, NY.
C)   Chicago, IL.
D)   Las Angeles, CA.
E)   Atlanta, GA.F) B) and D)
G) A) and C)

Question 20

A disease in which the causative agent remains inactive for a time before producing symptoms is referred to as

Accepted Answer

A)   zoonotic.
B)   latent.
C)   subacute.
D)   subclinical.
E)   acute.F) C) and D)
G) A) and E)

Exam 14: Principles of Disease and Epidemiology

Which of the following diseases is NOT spread by droplet infection?

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Compromised hosts are always suffering from suppressed immune systems.

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Urinary tract infections are the most common forms of nosocomial infections.

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Which of the following statements about biological transmission is FALSE?

Correct AnswerverifiedShow Answer

The etiologic agent of the disease in Situation 14.1 is

Correct AnswerverifiedShow Answer

Which of the following definitions is INCORRECT?

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Dengue fever, a zoonotic disease, is endemic in northern Mexico, but not in the U.S. Provide two plausible explanations for this dichotomy, and explain.

Correct AnswerAnswered by ExamLex AIThere are two plausible explanations for...View AnswerShow Answer

Pseudomonas bacteria colonized the bile duct of a patient following his liver transplant surgery. This is an example of a

Correct AnswerverifiedShow Answer

A host is not considered diseased until an infection changes one's state of health.

Correct AnswerverifiedShow Answer

The rise in herd immunity amongst a population can directly attributed to

Correct AnswerverifiedShow Answer

The CDC is located in

Correct AnswerverifiedShow Answer

A needlestick is an example of

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Which of the following can contribute to postoperative infections?

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A disease in which the causative agent remains inactive for a time before producing symptoms is referred to as

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Which of the following is NOT a predisposing factor of disease?

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Emergence of infectious diseases can be attributed to all of the following EXCEPT

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Which of the following is NOT an example of microbial antagonism?

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Which one of the following does NOT contribute to the incidence of nosocomial infections?

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Which of the following is a fomite?

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Figure 14.1 -Figure 14.1 shows the incidence of influenza during a typical year. Which letter on the graph indicates the endemic level?

Correct AnswerverifiedShow Answer

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