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96 Chapter Review: Did You Get It?
1. Match each term to its definition, as identified by its preceding letter code. epidemic
A
herd immunity
B C
incidence
D
The status of a person with resistance against a particular pathogen as a result of vaccination. The delivery of antigenic material to produce immunity to a disease (produce an immunised individual).
PR E O V N IE LY W
immunised
Indirect protection from an infectious disease provided to susceptible individuals because most of the population has been immunised against a specific pathogen. The occurrence of a disease on an international scale.
pandemic
E
A period or place of isolation in which an individual who may have been exposed to a disease is placed in order to prevent them from possibly spreading a disease.
quarantine
F
The widespread occurrence of a disease within a community or population.
G
The rate of occurrence or frequency of a disease in a population.
vaccination
2. Study the graphs of the 2014-2015 West Africa Ebola outbreak below:
Ebola cases 2014-2015
Guinea
Sierra Leone
Liberia
600
Weekly cases
500 400 300 200 100
0 23 Mar 2014
2015
3 Jan 23 Mar 2016 2014
2015
(a) In which country did Ebola first appear?
(b) Which country had the greatest number of cases of Ebola?
(c) What was the highest number of new cases reported per week?
(d) When and where did this occur?
3 Jan 23 Mar 2016 2014
2015
3 Jan 2016
3. Various health intelligence networks e.g. the Global Public Health Intelligence Network, monitor internet searches in order to determine if a disease outbreak is imminent. For example, the graph below shows the number of Google searches including the word "influenza" for 2009:
Apr
Month of 2009
Oct
How would monitoring the number of internet searches about diseases or symptoms help identify and locate potential outbreaks?
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Jul
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Google searches
Google searches for “influenza”