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Volume 11, Number 12—December 2005
Perspective

Community Epidemiology Framework for Classifying Disease Threats

Andy Fenton*Comments to Author  and Amy B. Pedersen†
Author affiliations: *Institute of Zoology, London, United Kingdom; †University of Virginia, Charlottesville, Virginia, USA

Main Article

Figure 1

Emerging infectious disease framework. A) Schematic diagram of the multihost-pathogen community. B) Possible outcomes for a novel host, H2, after an initial infection by a pathogen endemic in an existing host, H1, where (1) the pathogen is unable to invade H2, (2) the pathogen invades but cannot be sustained within H2, (3) the pathogen invades and persists in H2, and (4) the pathogen invades and drives H2 to extinction. C) Three thresholds separating the 4 possible outcomes: (i) the invasion thr

Figure 1. Emerging infectious disease framework. A) Schematic diagram of the multihost-pathogen community. B) Possible outcomes for a novel host, H2, after an initial infection by a pathogen endemic in an existing host, H1, where (1) the pathogen is unable to invade H2, (2) the pathogen invades but cannot be sustained within H2, (3) the pathogen invades and persists in H2, and (4) the pathogen invades and drives H2 to extinction. C) Three thresholds separating the 4 possible outcomes: (i) the invasion threshold, (ii) the persistence threshold, and (iii) the host extinction threshold.

Main Article

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