Module 3

Question 1

Name six reasons to model infectious diseases.

Answer 1

Question 2

What are acute and chronic diseases?

Answer 2

Question 2

What is the SIR framework? What are the parameters that guide the transitions?

Answer 2

Question 3

What does the force of infection imply?

Answer 3

Question 4

What are the two possible definitions of lambda?

Answer 4

Question 5

What does the force of infection mean in discrete time formulation?

Answer 5

Question 6

What does the force of infection mean in continuous time formulation?

Answer 6

Question 7

What is the definition of a stock and a flow?

Answer 7

Question 8

How are stocks and flows linked?

Answer 8

Question 9

What is the Naive SIR model?

Answer 9

Question 10

What are the fixed points of the Naive SIR model?

Answer 10

Question 11

Solve the Naive SIR model.

Answer 11

Question 12

What is a Phase Plot?

Answer 12

Question 13

What is the mass action and density dependent formulations of the rate of infections of the SIR model? What does it depend on?

Answer 13

Question 14

What do the Frequency and Density dependent formulations depend on? When do these differences matter?

Answer 14

Question 15

How is the frequency dependent transmission term derived?

Answer 15

Question 16

What are the SIR equations? (X, Y, Z)

Answer 16

Question 17

What are the SIR equations? (S, I, R)

Answer 17

Question 18

What is the Threshold Phenomenon?

Answer 18

Question 19

What is Epidemic Burnout?

Answer 19

Question 20

What is the SIR model with demography? What is the idea of this model?

Answer 20

Question 21

What are the fixed points of the SIR model?

Answer 21

Question 22

What is the equilibrium of the SIR model (with demographics)? When is it stable?

Answer 22

Question 23

Why is the SIR model with demographics like a damped oscillator?

Answer 23

Question 24

What is done in stability analysis?

Answer 24

1. Fixed points (i.e. dR/dt = 0) 2. We use the Jacobian to determine what directions things are pushed at the fixed points LOOK INTO THIS

Question 25

What is Numerical Integration? What is a conceptually very simple solving method? How does it work? What is a better alternative?

Answer 25

Question 26

What is the SIR model with death? How does the parameter rho impact the results?

Answer 26

Question 27

How is the SIR model rewritten for an always deadly disease?

Answer 27

Question 28

What are SIS models? How are they rewritten from the SIR model?

Answer 28

Question 29

What are SIR models with waning immunity? How is it rewritten from the SIR model?

Answer 29

Question 30

What is the SEIR model? What are the differences to the SIR model? Why may this be helpful?

Answer 30

Question 31

How are infections with a carrier state modelled?

Answer 31

Question 32

What are residence times?

Answer 32

The time a individual spends in a category.

Question 33

What is the Box-carr method?

Answer 33