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THE FINAL OUTCOME OF AN EPIDEMIC MODEL WITH SEVERAL DIFFERENT TYPES OF INFECTIVE IN A LARGE POPULATION
被引：22
作者：
BALL, F
[1
]
CLANCY, D
[1
]
机构：
[1] UNIV NEWCASTLE,DEPT MATH & STAT,NEWCASTLE TYNE NE1 7RU,TYNE & WEAR,ENGLAND
关键词：
CARRIER-BORNE EPIDEMICS;
EPIDEMICS IN HETEROGENEOUS POPULATIONS;
SIZE OF EPIDEMIC;
AREA UNDER TRAJECTORY OF INFECTIVES;
GAUSSIAN LIMIT THEOREMS;
EFFECT OF VARIABILITY;
D O I：
10.2307/3215114
中图分类号：
O21 [概率论与数理统计];
C8 [统计学];
学科分类号：
020208 ;
070103 ;
0714 ;
摘要：
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 deterministically.
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页码：579 / 590
页数：12
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