Epidemics: the dynamics of infectious diseases Course Week 1 Answers. (100% Correct)
Course Overview:
This course titled Epidemics - the Dynamics of Infectious Disease, was designed to be
a fun and engaging way for you to learn about a topic that significantly impacts our lives.
Whether you realize it or not, you are exposed to a variety of pathogens, the agents that
cause many diseases, as you go about your day. This course will help you understand the
many different forms these pathogens can take and how they can be transferred from
person to person. Although these pathogens can wreak havoc on our lives by making us
sick, our bodies have extensive processes in place to combat these invaders and to help us
heal from the infections they cause. As you progress through the modules you will also
learn about preventative actions (such as vaccines) and other control mechanisms we can
implement to limit the impact of the pathogens on our society. Ultimately, we aim to give
you the tools to understand how epidemics unfold, and how they can best be controlled.
Week One Quize Answers with 100% Correct score.
1) What is the most important feature that distinguishes microparasites from
microparasites?
a) The presence of a specialized transmission stage in macroparasites.
b) The difference in size.
c) The duration of persistence within the host
2) The impact of a micro-parasite (small) on a host is a function of what?
a) Being infected
b) The condition of the host at the time of infection
c) The number of parasites at a point in time.
3) The impact of a macro-parasite (large) on a host is a function of what?
a) The condition of the host at the time of infection
b) The number of parasites at a point in time
c) Being infected
4) Which of the following best describes what “disease” is?
a) Disease indicates that an infection with a microorganism has occurred
b) Disease occurs when a microorganism has been transmitted to a new individual
c) Disease occurs when cells or molecules cannot function properly
d) Disease refers to the replication of a microorganism in a host organism
5) Which of the following statements are true about an infectious individual?
a) An infectious individual must not be symptomatic
b) An infectious individual must be symptomatic
c) An infectious individual must be able to transmit the infecting organism to
someone else
d) An infectious individual cannot be resistant
6) Which of the following diseases is transmitted through water (waterborne transmission)?
a) Malaria
b) HIV / AIDS
c) Cholera
d) Influenza
7) What does it mean if an infectious disease cannot be transmitted directly?
a) It means it is not a disease at all
b) It means that transmission must be indirect
c) none of the given answers
d) It means it is a disease, but not an infectious diseases
8) Vaccination limits the basic reproductive number by:
a) reducing the duration of infection
b) reducing the number of susceptible
c) reducing the transmission rate
d) increasing the duration of infection
9) Which of the following is false:
a) All of the given answers
b) The effective reproductive number, R-sub-E, is defined as the average number of
secondary cases of infection from one primary case in a population comprised
entirely of susceptible individuals
c) The epidemic ends when all individuals are immune
d) A high reproductive number slows the epidemic spread
10) The collection of bacteria and other microbial life living in and on our bodies is
called what?
a) Pathogens
b) Microbiome
c) Medical microbial community
d) Ecosphere
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