Studies have found the short-run price elasticity of demand for HPV vaccines to be -0.25. Suppose that a transportation strike causes the supply of HPV vaccines to drop by 20 percent.

a. If HPV vaccines were selling for $130 per dose before the strike, how much of a price increase would you expect to see in the coming months?

b. Suppose that the government imposes a price ceiling on HPV vaccines at $130 per dose. How would the relationship between vaccine recipients and medical service providers change?