Pubh 401 Final Exam Questions And Already Passed Answers.

Pubh 401 Final Exam Questions And
Already Passed Answers.
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? - Answer
100 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? - Answer 50%



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? - Answer 5
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? - Answer 25
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?
- Answer 100 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? -
Answer 70%



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? - Answer 0.25



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? - Answer 5%



You were tasked as an epidemiologist to collect this data and provide information to the public

,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? -
Answer 25%



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? -
Answer 0.75



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?
- Answer 0.50



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? - Answer 25 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? - Answer 0.83



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? - Answer 0.17



A cross-sectional study has the following feature(s): [Choose all that apply] - Answer - 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. -
Answer True



COVID-19 pandemic outbreak is an example of - Answer Continuous source outbreak



John Snow's work of comparing water source from infected and uninfected persons represents

, 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) - Answer - 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? - Answer Enterovirus



Malaria is a parasitic disease transmitted by the Anopheles mosquito bite. This mode of
transmission is called - Answer vector



One type of model considered for epidemiologic field investigations is John Snow's investigation
of cholera because it included a: (Choose all that apply) - Answer - 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? - Answer Epidemic



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? -
Answer Epidemic curve



A specific case definition of a disease is one that: (Choose all that apply) - Answer - 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? - Answer Measles virus



Both Epidemiology and Clinical Epidemiology aims to solve public health problems. - Answer