The statistics of epidemic transitions

John M Drake, Tobias S Brett, Shiyang Chen, Bogdan I Epureanu, Matthew J Ferrari, Éric Marty, Paige B Miller, Eamon B O’Dea, Suzanne M O’Regan, Andrew W Park and Pejman Rohani

PLOS Computational Biology, 2019, vol. 15, issue 5, 1-14

Abstract: Emerging and re-emerging pathogens exhibit very complex dynamics, are hard to model and difficult to predict. Their dynamics might appear intractable. However, new statistical approaches—rooted in dynamical systems and the theory of stochastic processes—have yielded insight into the dynamics of emerging and re-emerging pathogens. We argue that these approaches may lead to new methods for predicting epidemics. This perspective views pathogen emergence and re-emergence as a “critical transition,” and uses the concept of noisy dynamic bifurcation to understand the relationship between the system observables and the distance to this transition. Because the system dynamics exhibit characteristic fluctuations in response to perturbations for a system in the vicinity of a critical point, we propose this information may be harnessed to develop early warning signals. Specifically, the motion of perturbations slows as the system approaches the transition.

Date: 2019
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Persistent link: https://EconPapers.repec.org/RePEc:plo:pcbi00:1006917

DOI: 10.1371/journal.pcbi.1006917

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