Health Economics @ Cambridge seminar: On the Management of Population Immunity

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• Dr Flavio Toxvaerd, Faculty of Economics, University of Cambridge
• Monday 17 October 2016, 15:00-16:00
• Large Seminar Room, 1st Floor, Institute of Public Health, University Forvie Site, Robinson Way, Cambridge.

If you have a question about this talk, please contact Ed Wilson.

This paper considers a susceptible-infected-recovered type model of an infectious disease, such as swine flu, in which costly treatment or vaccination confers immunity on recovered individuals. Once recovered, individuals become immune and thus indirectly protect the remaining susceptibles, who benefit from a measure of herd immunity.

It is shown that under decentralized decision making, infected individuals ignore the externalities that their decisions have on susceptible individuals and thus seek treatment or vaccination only if it is privately optimal to do so. In contrast, a benevolent central planner who does take this externality into account in choosing the level of aggregate treatment or vaccination, may choose to either eradicate the disease or to retard its eventual dissemination into the population.

Optimal treatment is shown to involve intervention at early stages of the epidemic. In contrast, optimal vaccination defers intervention to later stages of the epidemic. Thus, while treatment and vaccination have superficial similarities, their effects and desirability at different stages of the epidemic are radically different.

This talk is part of the Health Economics @ Cambridge series.

This talk is included in these lists:

• BHRU Annual Lecture 2015
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