A Rational Public Health Policy Would Expand the Proportion of the Population

Multiple Choice

A rational public health policy would expand the proportion of the population vaccinated:

A) whenever the marginal social benefit of an additional vaccination is positive.
B) until the marginal cost of an additional vaccination equals the marginal social benefit of an additional vaccination.
C) until the marginal cost of an additional vaccination equals the marginal private benefit of an additional vaccination.
D) until the marginal social benefit of an additional vaccination equals the marginal private benefit of an additional vaccination.