Gordis Epidemiology 6th Edition By David D
Celentano; Moyses Covering All Chapters Questions
and Answers Graded A+
QUESTION: B ✓✓ Correct- 2. What is the most accurate definition of the incubation period of an
infectious disease)?
A. The time of onset of clinical illness or the onset of recognizable symptoms
B. The interval from receipt of infection to the time of onset of clinical illness (the onset of
recognizable symptoms)
C. The time of invasion by an infectious agent
D. The time between initiation of infection and first shedding or excretion of the agent
E. The period between exposure and the onset of infectiousness
QUESTION: B ✓✓ Correct- There was a food poisoning outbreak on April 1, 2018, at the City Z Food
Safety Conference. There were 1,000 people registered for the conference with luncheon, 100
volunteers to host attendees, and 50 people who served the luncheon during the conference.
Except for 50 people who served the food, all of the participants and volunteers ate the food from
the luncheon at the conference on April 1, 2018. Based only on the information given in this
question, how many people are at risk in this food poisoning outbreak?
a. 1,000
b. 1,100
с. 1,150
d. 150
e. 50
QUESTION: E ✓✓ Correct- There was a food poisoning outbreak on April 1, 2018, at the City < Food
Safety Conference. There were 1,000 people registered for the conference with luncheon, 100
volunteers to host attendees, and 50 people who served the luncheon during the conference.
Except for 50 people who served the food, all of the participants and volunteers ate the food prison
inceported, he epidemiegist serid, surveys e a nil at rise to investigate the
cause. However, only 900 people among those at risk answer the survey. After analysis of 900 survey
results, the epidemiologist concludes that the most suspected foods in the outbreak are pepperoni
pizza and meatball spaghetti. What is the overall attack rate for those who ate meatball spaghetti?
1|Page
,A. 41%
B. 38%
C. 27%
D. 40%
E. 23%
QUESTION: B ✓✓ Correct- 1. Which of the following is an example of tertiary prevention?
a. Vaccination for rotavirus for children younger than the age of 1 year
b. Surgical amputation of an extremity with osteosarcoma (bone cancer)
c. Screening for gestational diabetes after 24 weeks of pregnancy
d. Sexual education program in elementary schools
e. Increasing taxes for buying cigarettes
QUESTION: E ✓✓ Correct- This historic character observed that childbed fever mortality was more
common among women treated by physicians and medical students compared with women treated
by
midwives. Based on his observations, he implemented a hand wash policy that resulted in a
decrease in mortality. Name the character that we are talking about.
a. John Snow
b. Edward Jenner
c. D.A. Henderson
d. Leon Gordis
e. Ignaz Semmelweis
QUESTION: B ✓✓ Correct- Thanks to the contributions of Edward Jenner, the following disease was
eradicated later
by efforts organized by D.A. Henderson:
a. Cholera
b. Smallpox
c. Chickenpox
2|Page
, d. Polio
e. Zika
QUESTION: D ✓✓ Correct- Over the past century, a marked decline in the mortality rates of many
infectious diseases
has been observed. Which of the following is the most likely reason for the observed decline
in mortality rates from common infectious diseases?
a. Development of penicillin
b. Development of insulin
c. Development of vaccines
d. Improvement in social conditions
e. Worse sanitation and unsafe water
QUESTION: B ✓✓ Correct- Which term most accurately describes the following definition? "The
occurrence in a community or region of cases of an illness, specific health-related behavior, or other
health-
related events clearly in excess of normal expectancy." [Porta M, ed. A Dictionary of
Epidemiology. New York: Oxford University Press; 2014.]
a. Endemic
b. Epidemic
c. Pandemic
d. Attack rate
e. Incubation period
QUESTION: B ✓✓ Correct- What is the most accurate definition of the incubation period (of an
infectious disease)?
a. The time of onset of clinical illness or the onset of recognizable symptoms
b. The interval from receipt of infection to the time of onset of clinical illness (the onset of
recognizable symptoms)
c. The time of invasion by an infectious agent
d. The time between initiation of infection and first shedding or excretion of the agent
3|Page
Celentano; Moyses Covering All Chapters Questions
and Answers Graded A+
QUESTION: B ✓✓ Correct- 2. What is the most accurate definition of the incubation period of an
infectious disease)?
A. The time of onset of clinical illness or the onset of recognizable symptoms
B. The interval from receipt of infection to the time of onset of clinical illness (the onset of
recognizable symptoms)
C. The time of invasion by an infectious agent
D. The time between initiation of infection and first shedding or excretion of the agent
E. The period between exposure and the onset of infectiousness
QUESTION: B ✓✓ Correct- There was a food poisoning outbreak on April 1, 2018, at the City Z Food
Safety Conference. There were 1,000 people registered for the conference with luncheon, 100
volunteers to host attendees, and 50 people who served the luncheon during the conference.
Except for 50 people who served the food, all of the participants and volunteers ate the food from
the luncheon at the conference on April 1, 2018. Based only on the information given in this
question, how many people are at risk in this food poisoning outbreak?
a. 1,000
b. 1,100
с. 1,150
d. 150
e. 50
QUESTION: E ✓✓ Correct- There was a food poisoning outbreak on April 1, 2018, at the City < Food
Safety Conference. There were 1,000 people registered for the conference with luncheon, 100
volunteers to host attendees, and 50 people who served the luncheon during the conference.
Except for 50 people who served the food, all of the participants and volunteers ate the food prison
inceported, he epidemiegist serid, surveys e a nil at rise to investigate the
cause. However, only 900 people among those at risk answer the survey. After analysis of 900 survey
results, the epidemiologist concludes that the most suspected foods in the outbreak are pepperoni
pizza and meatball spaghetti. What is the overall attack rate for those who ate meatball spaghetti?
1|Page
,A. 41%
B. 38%
C. 27%
D. 40%
E. 23%
QUESTION: B ✓✓ Correct- 1. Which of the following is an example of tertiary prevention?
a. Vaccination for rotavirus for children younger than the age of 1 year
b. Surgical amputation of an extremity with osteosarcoma (bone cancer)
c. Screening for gestational diabetes after 24 weeks of pregnancy
d. Sexual education program in elementary schools
e. Increasing taxes for buying cigarettes
QUESTION: E ✓✓ Correct- This historic character observed that childbed fever mortality was more
common among women treated by physicians and medical students compared with women treated
by
midwives. Based on his observations, he implemented a hand wash policy that resulted in a
decrease in mortality. Name the character that we are talking about.
a. John Snow
b. Edward Jenner
c. D.A. Henderson
d. Leon Gordis
e. Ignaz Semmelweis
QUESTION: B ✓✓ Correct- Thanks to the contributions of Edward Jenner, the following disease was
eradicated later
by efforts organized by D.A. Henderson:
a. Cholera
b. Smallpox
c. Chickenpox
2|Page
, d. Polio
e. Zika
QUESTION: D ✓✓ Correct- Over the past century, a marked decline in the mortality rates of many
infectious diseases
has been observed. Which of the following is the most likely reason for the observed decline
in mortality rates from common infectious diseases?
a. Development of penicillin
b. Development of insulin
c. Development of vaccines
d. Improvement in social conditions
e. Worse sanitation and unsafe water
QUESTION: B ✓✓ Correct- Which term most accurately describes the following definition? "The
occurrence in a community or region of cases of an illness, specific health-related behavior, or other
health-
related events clearly in excess of normal expectancy." [Porta M, ed. A Dictionary of
Epidemiology. New York: Oxford University Press; 2014.]
a. Endemic
b. Epidemic
c. Pandemic
d. Attack rate
e. Incubation period
QUESTION: B ✓✓ Correct- What is the most accurate definition of the incubation period (of an
infectious disease)?
a. The time of onset of clinical illness or the onset of recognizable symptoms
b. The interval from receipt of infection to the time of onset of clinical illness (the onset of
recognizable symptoms)
c. The time of invasion by an infectious agent
d. The time between initiation of infection and first shedding or excretion of the agent
3|Page
