Epidemics: the dynamics of infectious diseases Course Week 5 Answers. (100% Correct)

Quiz 5

1) During an epidemic, the healthy public may be encouraged to wash their hands in order to limit the transmission of an infectious disease. Hand-washing, in this example, is a form of:

a) Prevention

b) Infection

c) Treatment

d) Disease

2) Science can lead to recommendations to control an epidemic:

a) That cannot be supported with existing resources.

b) That do not coincide with existing policies.

c) That are not well understood by the affected community.

d) All of the given answers.

3) Which of the following statements about variolation is false?

a) Variolation could sometimes cause new small epidemics.

b) The practice probably originated from China or India.

c) It involves inoculating healthy children with cowpox.

d) The practice was introduced to England by Lady Mary Montague.

4) Mortality due to measles declined faster than infection with measles virus because:

a) The basic reproductive number of measles declined overtime.

b) Measles has a higher mortality rate in older individuals.

c) Measles has a lower mortality rate in older individuals.

d) Vaccination efficacy is higher in wenger individual.

5) Which of the following would NOT be expected to decrease the DALYs associated with an infection?

a) Treatment that lowers the mortality rate associated with disease

b) Reducing vaccination coverage

c) Treatment that reduces the duration of disease

d) Treatment that reduces the severity of disease

Epidemics the dynamics of infectious diseases course week 4 answers

6)Which of the following vaccination strategies would be safest in immunocompromised individuals?

a) There is no vaccine strategy suitable for use in immunocompromised 

individuals.

b) Use killed vaccine.

c) Use the most effective modified live vaccine available.

d) Direct exposure to sick person 

7) A pathogen R0 of 4 would require what proportion of the population to be immune in order to achieve herd immunity?

a) 95%

b) 75%

c) 50%

d) 80%

8) Why vaccine supply be limited?

a) None of the give answers

b) Because the production of vaccine can take a long time.

c) Because some people refuse vaccination.

d) Because there is not enough demand for vaccine.

9) Target vaccination is:

a) A strategy to increase the effectiveness of a given vaccination coverage

b) A strategy to increase the vaccination coverage

c) A strategy aimed at elderly people

d) None of the given answers

10) Why is herd immunity for measles impossible to achieve with only a single dose of pediatric vaccination?

a) Herd immunity requires 80% of the population to be immune and the vaccine immunizes -90% of infants.

b) The vaccine is not safe for infants.

c) Its impossible to vaccinate 95% of infants.

d) Herd immunity requires 95% of the population to be immune and the vaccine immunizes -90% of infants.

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Epidemics: the dynamics of infectious disease week 3 Answers (100% Correct)