Consider the formula in Section 3 of SimUText's How Diseases Spread that relates the critical immunization threshold, p c and the Basic Reproductive Number R 0 . Recall that the critical immunization...

Consider the formula in Section 3 of SimUText's How Diseases Spread that relates the critical immunization threshold,
p
_c
and the Basic Reproductive Number R₀.

Recall that the critical immunization threshold is the minimum proportion of the population that must be vaccinated to establish herd immunity;

and

The Basic Reproductive Number is the average number of individuals infected by an infected individual, if the whole population is susceptible.

What happens to the critical immunization threshold as R₀
gets larger (more individuals are infected by an infected individual)?

Consider the formula in Section 3 of SimUText's How Diseases Spread that relates the critical immunization threshold,
p
_cand the Basic Reproductive Number R₀.

Recall that the critical immunization threshold is the minimum proportion of the population that must be vaccinated to establish herd immunity;

and

The Basic Reproductive Number is the average number of individuals infected by an infected individual, if the whole population is susceptible.

What happens to the critical immunization threshold as R₀gets larger (more individuals are infected by an infected individual)?

B. The threshold
p
_c
approaches 1 (100%).

D. The threshold
p
_c
approaches 0.

E. The threshold
p
_c
approaches 0.5.