dramatically accelerate vaccination. Available evidence on efficacy is not dispositive but suggests half- or even quarter-doses of …

against an emerging epidemic. While the nonmonotonic pattern of the optimal subsidy persists, new findings emerge. Universal … vaccination with a perfectly effective vaccine becomes a viable firm strategy: the marginal consumer is still willing to pay since … those infected before vaccine rollout remain a source of transmission. We derive a simple condition under which vaccination …

disease, learned after a disease is contracted, can lead revenue from a treatment to exceed revenue from a preventative …

positive externalities, such as sanitation, statically optimal subsidies will typically grow. However, in a dynamic game … subsidies. In the extreme, the benefits of foreign subsidies for durables that create positive externalities may be more than … fully offset by such delays in private investment. For durables with negative externalities, such as guns, delays between …

vaccination and reduce mortality, and that the costs of testing these regimens are dwarfed by their potential benefits. We first … use an SEIR model to estimate that under these efficacy levels, doubling or quadrupling the rate of vaccination by using … vaccination campaigns based on existing immune response data, as some did for delayed second doses. If efficacy turned out to be …