The Economical Control of Infectious Diseases

The structure of representative agents and decentralisation of the social planner's problem provide a framework for the economics of infection and associated externalities. Optimal implementation of prevention and therapy depends on: (1) biology including whether infection is person to person or by vectors; (2) whether the infected progress to recovery and susceptibility, immunity, or death; (3) costs of interventions; (4) whether interventions target everyone, the uninfected, the infected, or contacts between the two; (5) individual behaviour leading to two types of externalities. By way of example, if people recover to be susceptible, government subsidies should equally favour prevention and therapy. Copyright 2004 Royal Economic Society.