In disease control, there are two competing forces determining disease prevalence: herd immunity and the responsiveness of vaccine demand to prevalence rates.Discuss each of these. How can we use these tools to eradicate diseases? Is one better than another?

Discuss the following -So whether the obesity epidemic is a public health crisis under our rubric depends on whether one person's obesity causes a loss in social welfare (also known as a social loss or a deadweight loss).Discuss the mechanisms you would use to answer this question. Do you believe it is a public health crisis?