The final outcome of an epidemic model with several different types of infective in a large population

Frank Ball, Damian Clancy

Research output: Contribution to journalArticle

Abstract

We consider a stochastic model for the spread of an epidemic amongst a closed homogeneously mixing population, in which there are several different types of infective, each newly infected individual choosing its type at random from those available. The model is based on the carrier-borne model of Downton (1968), as extended by Picard and Lefevre (1990). The asymptotic distributions of final size and area under the trajectory of infectives are derived as the initial population becomes large, using arguments based on those of Scalia-Tomba (1985), (1990). We then use our limiting results to compare the asymptotic final size distribution of our model with that of a related multi-group model, in which the type of each infective is assigned determinstically.
Original languageEnglish
Pages (from-to)579-590
Number of pages12
JournalJournal of Applied Probability
Volume32
DOIs
Publication statusPublished - 1995

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