Epidemics: the dynamics of infectious diseases Course Week 3 Answers. (100% Correct)

Quiz week 3 

1) What pathogen characteristics are most likely to lead to host extinction? 

a) Vector –borne transmission 

b) An alternative resistant host 

c) Rapid contagion 

d) Both an alternative resistant host and vector-borne transmission 

2) If the mean age of infection with a pathogen is 8 years in a population with mean life expectancy of 80 years, what is the approximate RO for the pathogen? 

a) 12 

b) 8 

c) 14 

d) 11 

3) The interepidemic period will increase with: 

a) Short infectious period 

b) All of the given answers 

c) Increasing vaccination rate 

d) Increasing birth rate 

4) Seasonality in cholera is caused by: 

a) Changes in mosquito abundance through the year 

b) Changes in rainfall through the year 

c) Changes in temperature through the year 

d) All of the given answers 

e) None of the given answers 

5) When seasonality is caused by aggregation in children in schools we call it: 

a) Environment forced seasonality

b) Environmentally forced seasonality and term-time forced seasonality 

c) Behaviorally-associated seasonality 

d) Term-time forced seasonality and behaviorally associated seasonality 

Epidemics-dynamics-of-infectious disease week 2 Answers All 100% Correct.

6) Rabies persists within a host population by: 

a) Infecting multiple hosts 

b) Making the host scared of water 

c) Producing shingles in adults 

7) The critical community size for measles in Niger was estimated to be: 

a) 1,500,000 

b) 300,000 

c) 500,000 

d) 100,000 

8) Measles in Niger is rare during the rainy season because: 

a) People are less susceptible to measles in the rainy season 

b) Urban population density is lower 

c) Urban population density is greater 

d) The temperatures are cooler 

9) Which of the following characteristics is not true about influenza? 

a) It is caused by a virus that is only found in humans. 

b) It is a disease of the upper respiratory system. 

c) It is a disease that has caused serious epidemics in human populations in the past. 

d) It occurs seasonally. 

10) Which of the events below could indicate a pandemic influenza outbreak is likely to occur? 

a) There is mortality from influenza virus in the winter months in the United States. 

b) Influenza virus is identified in birds. 

c) Persons become sick from influenza virus infection in the summer in the United States. 

d) The incident of person with cough increases during the winter month in the United States. 

For week 2 Answer 👇

Epidemics-dynamics-of-infectious disease week 2 Answers

For week 4 Answer 👇

Epidemics-the-dynamics-of-infectious-diseases-course-week-4-answers.