I stay with this Quiz and its analytical logic.
Compartment Chain
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Build the SIRV chain
One compartment is fixed. Place the remaining compartments until the protection path becomes visible.
I Infectious The active source of infection within the system.
Exactly right.
SIRV adds V to the familiar SIR logic. Vaccination moves people out of the susceptible group into a protected state and changes the later course of the wave.
Multiple Choice
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Choose the SIRV premise
One answer fits the model.
Ready.
Exactly right.
SIRV moves part of the susceptible group into V. That means fewer people reach the infectious phase.
Matching Game
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Match the SIRV assumptions
Which statement belongs to which model element?
Ready.
Exactly right.
SIRV adds a protection state to SIR. Vaccination moves people out of S into V and changes how many reach I in the first place.