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Science 18 May 2001:
Vol. 292. no. 5520, pp. 1316 - 1317
DOI: 10.1126/science.1061076
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Perspectives

EPIDEMIOLOGY:
How Viruses Spread Among Computers and People

Alun L. Lloyd and Robert M. May

The spread of diseases in human and other populations can be described in terms of networks, where individuals are represented by nodes and modes of contact by edges. Similar models can be applied to the spread of viruses on the Internet. In their Perspective, Lloyd and May discuss the similarities and differences between the dynamics of computer viruses and infections of human and other populations.

A. L. Lloyd is in the Program in Theoretical Biology, Institute for Advanced Study, Einstein Drive, Princeton, NJ 08540, USA. E-mail: alun@alunlloyd.com R. M. May is in the Department of Zoology, University of Oxford, South Parks Road, Oxford OX1 3PS, UK. E-mail: robert.may@zoo.ox.ac.uk

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