Find an example infectious disease for each of the term(s) or concept(s) below. Give the name
of the disease and its causal agent and whether it is viral (v) bacterial (B) fungal (F),
protozoan(P) or helminthic(H). All of the diseases must be infectious diseases. Concerning
epidemics - give an example of a disease that has a common source. Concerning epidemics -
give an example of a disease that has a propagated source. Give an example of a notifiable viral
infectious disease. Give an example of a disease with a seasonal occurrence. Why is it seasonal?
Solution
Answer:
12. Concerning epidemics – give an example of a disease that has a common source
Answer: In common source epidemic breakouts, the duration of exposure is brief and it is caused
when a group of persons are all exposed to a toxic agent which has a common source.
Example of common source infectious disease is botulism which is caused by a toxin
(botulinum) produced by Clostridium botulinum bacteria. Common source in botulism could
include infected homemade, preserved or fermented food.
13. Concerning epidemics – give an example of a disease that has a propagated source
Answer: Propagated epidemic outbreak occurs by transmission of disease from one person to
another. Example of a propagated source epidemic breakout is Measles which is a highly
contagious infectious disease caused by the measles virus.
14. Give an example of a notifiable viral infectious disease
Answer: A notifiable viral infectious disease is the one that is required to be reported to
government authorities as per the prevailing law. Example Anthrax which is caused by bacterium
Bacillus anthracis
15. Give an example of a disease with a seasonal occurrence. Why is it seasonal?
Answer: In case of seasonal diseases there is a periodic surge in the incidence rate of disease in a
particular season. Example: Influenza (caused by Influenza virus) outbreaks occur seasonally
with peak prevalence in winter which can be attributed to longer survival times and higher
aerosol transmission of the influenza virus in cold temperature conditions..
Find an example infectious disease for each of the term(s) or concept.pdf
1. Find an example infectious disease for each of the term(s) or concept(s) below. Give the name
of the disease and its causal agent and whether it is viral (v) bacterial (B) fungal (F),
protozoan(P) or helminthic(H). All of the diseases must be infectious diseases. Concerning
epidemics - give an example of a disease that has a common source. Concerning epidemics -
give an example of a disease that has a propagated source. Give an example of a notifiable viral
infectious disease. Give an example of a disease with a seasonal occurrence. Why is it seasonal?
Solution
Answer:
12. Concerning epidemics – give an example of a disease that has a common source
Answer: In common source epidemic breakouts, the duration of exposure is brief and it is caused
when a group of persons are all exposed to a toxic agent which has a common source.
Example of common source infectious disease is botulism which is caused by a toxin
(botulinum) produced by Clostridium botulinum bacteria. Common source in botulism could
include infected homemade, preserved or fermented food.
13. Concerning epidemics – give an example of a disease that has a propagated source
Answer: Propagated epidemic outbreak occurs by transmission of disease from one person to
another. Example of a propagated source epidemic breakout is Measles which is a highly
contagious infectious disease caused by the measles virus.
14. Give an example of a notifiable viral infectious disease
Answer: A notifiable viral infectious disease is the one that is required to be reported to
government authorities as per the prevailing law. Example Anthrax which is caused by bacterium
Bacillus anthracis
15. Give an example of a disease with a seasonal occurrence. Why is it seasonal?
Answer: In case of seasonal diseases there is a periodic surge in the incidence rate of disease in a
particular season. Example: Influenza (caused by Influenza virus) outbreaks occur seasonally
with peak prevalence in winter which can be attributed to longer survival times and higher
aerosol transmission of the influenza virus in cold temperature conditions.
