Epidemics: the dynamics of infectious diseases Course Week 4 Answers. (100% Correct)
Quiz Week 4
1) Which of the following is NOT a discovery John Snow made?
a) Cholera is not a disease of foul air.
b) Vibrio cholerae
c) Cholera is a gastrointestinal disease.
d) Cholera is transmitted by contaminated water.
2) The social networks relevant for any two diseases are never identical. Why not?
a) Because the exact biological transmission is different for each disease.
b) Because some infectious diseases are not transmissible.
c) Because people change their social contacts all the time.
d) Because disease cannot spread at the same time.
3) Mapping social networks relevant for infectious diseases is difficult because:
a) Not everybody uses a social network like Facebook or Twitter.
b) Some groups have a dense social network compared to others.
c) None of the answers given.
d) It is very resource-intensive.
4) The degree of a node in the context of social networks relevant for infectious disease
is:
a) The number of edges a node has
b) The number of other nodes a node is directly connected to
c) All of the given answers
d) The number of people a person can potentially transmit a disease to
5) Which property of the degree distribution affects RO?
a) The variance of the distribution
b) The maximum degree
c) The median degree
d) The minimum degree
6) What is the definition of a superspreader?
a) A highly infectious person who spreads the agent of an infectious disease to
many other people.
b) A person with an exceptionally long.
c) infectious period An infectious person with a high contact rate with other people
7) Mary Mallon was known as Typhoid Mary because:
a) She made salads without washing her hands.
b) She was an asymptomatic carrier of the typhoid fever.
c) She was an asymptomatic carrier of the tick-borne disease typhus.
8) Tuberculosis incidence was high in cities during the industrial revolution because:
a) Conditions were crowded.
b) Sanitation was poor and conditions were crowded.
c) Sanitation was poor
d) There were many superspreders.
9) SARS is an infectious disease that could spread around the world quickly because of:
a) Air travel
b) All people in the world being susceptible
c) All of the given answers
d) People continue to trap and sell wild animals that are reservoirs of SARS (like the
Civet)
10) Imagine that there was a website where the public posted their flu symptoms and
experience, in order for researchers to analyze trends. This would be an example of?
a) Citizen Science
b) Decoding
c) Elimination
d) Directives
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