pubh 401 EXAM WITH COMPLETE
SOLUTIONS
You were tasked as an epidemiologist to collect this data and provide information to the
public and institutions. What is the total number of at risk of getting the COVID-19 virus?
-ANS100 million
You were tasked as an epidemiologist to collect this data and provide information to the
public and institutions. If the part of the population who were exposed to the COVID-19
disease but did not contract the disease are considered immune, what percent of the
population is immune? -ANS50%
You were tasked as an epidemiologist to collect this data and provide information to the
public and institutions. What is the number of nonexposed cases of the COVID-19
virus? -ANS5 million
You were tasked as an epidemiologist to collect this data and provide information to the
public and institutions. How many cases were reported to have the COVID-19 virus? -
ANS25 million
You were tasked as an epidemiologist to collect this data and provide information to the
public and institutions. How many individuals can be considered susceptible to the
COVID-19 disease? -ANS100 million
You were tasked as an epidemiologist to collect this data and provide information to the
public and institutions. What percentage of the population were exposed to the COVID-
19 disease? -ANS70%
You were tasked as an epidemiologist to collect this data and provide information to the
public and institutions. What is the proportion of COVID- 19 virus infection cases? -
ANS0.25
You were tasked as an epidemiologist to collect this data and provide information to the
public and institutions. What is the percentage of nonexposed cases of the COVID-19
virus infection reported? -ANS5%
You were tasked as an epidemiologist to collect this data and provide information to the
public and institutions. How many people were unexposed to the COVID-19 virus? -
ANS30 million
You were tasked as an epidemiologist to collect this data and provide information to the
public and institutions. What is the percentage of cases of the COVID-19 virus infection
reported? -ANS25%
,You were tasked as an epidemiologist to collect this data and provide information to the
public and institutions. What proportion of the population is considered not infected
COVID-19 virus? -ANS0.75
You were tasked as an epidemiologist to collect this data and provide information to the
public and institutions. What is the probability of someone not getting COVID-19 after
being exposed? -ANS0.50
You were tasked as an epidemiologist to collect this data and provide information to the
public and institutions. How many of the nonexposed population were noncases of the
COVID-19 virus? -ANS25 million
You were tasked as an epidemiologist to collect this data and provide information to the
public and institutions. What is the probability of an individual not getting COVID-19,
given that he/she was not exposed? -ANS0.83
You were tasked as an epidemiologist to collect this data and provide information to the
public and institutions. Suppose a person is not exposed to the COVID-19 virus, what is
the probability of the person getting infected? -ANS0.17
A cross-sectional study has the following feature(s): [Choose all that apply] -ANS- It is
more useful for descriptive epidemiology than it is for analytic epidemiology
- It is synonymous with survey
- It usually provides information on prevalence rather than incidence
Koch's first postulate states that a specific organism must always be observed in
association with the disease. This means asymptomatic individuals are not covered
under this postulate. -ANSTrue
COVID-19 pandemic outbreak is an example of -ANSContinuous source outbreak
John Snow's work of comparing water source from infected and uninfected persons
represents a case/control study. Whiles his work on comparing cholera rates by
neighborhood represents -ANSEcological Study
A number of passengers on a cruise ship from New York to California have recently
developed some illness symptoms compatible with a type of coronavirus, COVID-19.
Testing for this coronavirus is not readily available on any nearby island, and the test
takes several days even where available. Assuming you are the epidemiologist called
on to board the ship and investigate this possible outbreak. Which variables might you
include in characterizing the outbreak described by person? (Choose all that apply) -
ANS- Age of passenger
- Status as passenger or crew
, Which disease in the figure has the same range of duration of incubation as the period
when it is most common? -ANSEnterovirus
Malaria is a parasitic disease transmitted by the Anopheles mosquito bite. This mode of
transmission is called -ANSvector
One type of model considered for epidemiologic field investigations is John Snow's
investigation of cholera because it included a: (Choose all that apply) -ANS- Biologically
plausible hypothesis
- Recommendation for public health action
- Comparison of a health outcome among exposed and unexposed groups
What is the name of the occurrence of a clearly higher than expected number of cases
of a disease within a limited geographical region? -ANSEpidemic
A number of passengers on a cruise ship from New York to California have recently
developed some illness symptoms compatible with a type of coronavirus, COVID-19.
Testing for this coronavirus is not readily available in any nearby island, and the test
takes several days even where available. Assuming you are the epidemiologist called
on to board the ship and investigate this possible outbreak, how would you display the
time course of the outbreak? -ANSEpidemic curve
A specific case definition of a disease is one that: (Choose all that apply) -ANS- Is likely
to include only (or mostly) true cases
- May exclude mild cases
The above figure measures the severity of three different diseases. Which disease is
most severe? -ANSMeasles virus
Both Epidemiology and Clinical Epidemiology aims to solve public health problems. -
ANSTrue
A major feature of an analytic epidemiologic study is: -ANSUnderstand factors that
influence health outcome or exposure
The proteins produced by the body to neutralize or destroy toxins or disease-carrying
organisms is known as -ANSAntibodies
In epidemiological studies in which the researcher has an influence on the participant of
the study is referred to as -ANSexperimental
All the following, except ................... causes the transition of epidemiology. -ANSHealth
Insurance
To analyze disease surveillance data by age, which of the following age groups is
preferred? -ANSDepends on the disease
SOLUTIONS
You were tasked as an epidemiologist to collect this data and provide information to the
public and institutions. What is the total number of at risk of getting the COVID-19 virus?
-ANS100 million
You were tasked as an epidemiologist to collect this data and provide information to the
public and institutions. If the part of the population who were exposed to the COVID-19
disease but did not contract the disease are considered immune, what percent of the
population is immune? -ANS50%
You were tasked as an epidemiologist to collect this data and provide information to the
public and institutions. What is the number of nonexposed cases of the COVID-19
virus? -ANS5 million
You were tasked as an epidemiologist to collect this data and provide information to the
public and institutions. How many cases were reported to have the COVID-19 virus? -
ANS25 million
You were tasked as an epidemiologist to collect this data and provide information to the
public and institutions. How many individuals can be considered susceptible to the
COVID-19 disease? -ANS100 million
You were tasked as an epidemiologist to collect this data and provide information to the
public and institutions. What percentage of the population were exposed to the COVID-
19 disease? -ANS70%
You were tasked as an epidemiologist to collect this data and provide information to the
public and institutions. What is the proportion of COVID- 19 virus infection cases? -
ANS0.25
You were tasked as an epidemiologist to collect this data and provide information to the
public and institutions. What is the percentage of nonexposed cases of the COVID-19
virus infection reported? -ANS5%
You were tasked as an epidemiologist to collect this data and provide information to the
public and institutions. How many people were unexposed to the COVID-19 virus? -
ANS30 million
You were tasked as an epidemiologist to collect this data and provide information to the
public and institutions. What is the percentage of cases of the COVID-19 virus infection
reported? -ANS25%
,You were tasked as an epidemiologist to collect this data and provide information to the
public and institutions. What proportion of the population is considered not infected
COVID-19 virus? -ANS0.75
You were tasked as an epidemiologist to collect this data and provide information to the
public and institutions. What is the probability of someone not getting COVID-19 after
being exposed? -ANS0.50
You were tasked as an epidemiologist to collect this data and provide information to the
public and institutions. How many of the nonexposed population were noncases of the
COVID-19 virus? -ANS25 million
You were tasked as an epidemiologist to collect this data and provide information to the
public and institutions. What is the probability of an individual not getting COVID-19,
given that he/she was not exposed? -ANS0.83
You were tasked as an epidemiologist to collect this data and provide information to the
public and institutions. Suppose a person is not exposed to the COVID-19 virus, what is
the probability of the person getting infected? -ANS0.17
A cross-sectional study has the following feature(s): [Choose all that apply] -ANS- It is
more useful for descriptive epidemiology than it is for analytic epidemiology
- It is synonymous with survey
- It usually provides information on prevalence rather than incidence
Koch's first postulate states that a specific organism must always be observed in
association with the disease. This means asymptomatic individuals are not covered
under this postulate. -ANSTrue
COVID-19 pandemic outbreak is an example of -ANSContinuous source outbreak
John Snow's work of comparing water source from infected and uninfected persons
represents a case/control study. Whiles his work on comparing cholera rates by
neighborhood represents -ANSEcological Study
A number of passengers on a cruise ship from New York to California have recently
developed some illness symptoms compatible with a type of coronavirus, COVID-19.
Testing for this coronavirus is not readily available on any nearby island, and the test
takes several days even where available. Assuming you are the epidemiologist called
on to board the ship and investigate this possible outbreak. Which variables might you
include in characterizing the outbreak described by person? (Choose all that apply) -
ANS- Age of passenger
- Status as passenger or crew
, Which disease in the figure has the same range of duration of incubation as the period
when it is most common? -ANSEnterovirus
Malaria is a parasitic disease transmitted by the Anopheles mosquito bite. This mode of
transmission is called -ANSvector
One type of model considered for epidemiologic field investigations is John Snow's
investigation of cholera because it included a: (Choose all that apply) -ANS- Biologically
plausible hypothesis
- Recommendation for public health action
- Comparison of a health outcome among exposed and unexposed groups
What is the name of the occurrence of a clearly higher than expected number of cases
of a disease within a limited geographical region? -ANSEpidemic
A number of passengers on a cruise ship from New York to California have recently
developed some illness symptoms compatible with a type of coronavirus, COVID-19.
Testing for this coronavirus is not readily available in any nearby island, and the test
takes several days even where available. Assuming you are the epidemiologist called
on to board the ship and investigate this possible outbreak, how would you display the
time course of the outbreak? -ANSEpidemic curve
A specific case definition of a disease is one that: (Choose all that apply) -ANS- Is likely
to include only (or mostly) true cases
- May exclude mild cases
The above figure measures the severity of three different diseases. Which disease is
most severe? -ANSMeasles virus
Both Epidemiology and Clinical Epidemiology aims to solve public health problems. -
ANSTrue
A major feature of an analytic epidemiologic study is: -ANSUnderstand factors that
influence health outcome or exposure
The proteins produced by the body to neutralize or destroy toxins or disease-carrying
organisms is known as -ANSAntibodies
In epidemiological studies in which the researcher has an influence on the participant of
the study is referred to as -ANSexperimental
All the following, except ................... causes the transition of epidemiology. -ANSHealth
Insurance
To analyze disease surveillance data by age, which of the following age groups is
preferred? -ANSDepends on the disease
