This paper estimates the overall impact and externality effects of
an influenza vaccination program expanding coverage outside the
typical target group. Using a triple-difference design, which exploits
the introduction of a broad based vaccination program in Ontario
and the quality of the vaccine from year to year, I link higher
vaccination to health improvements. Results indicate coverage
expansion leads to large excess gains for program-regions; benefits
exhibit decreasing returns corresponding to a standard model of
disease dynamics; and substantial external benefits accrue to older
Ward, Courtney J.
"Influenza Vaccination Campaigns: Is an Ounce of Prevention Worth a Pound of Cure?"
American Economic Journal: Applied Economics,
State and Local Government: Health; Education; Welfare; Public Pensions
Health: Government Policy; Regulation; Public Health