4.7 Article

Emergence of synergistic and competitive pathogens in a coevolutionary spreading model

期刊

PHYSICAL REVIEW E
卷 105, 期 3, 页码 -

出版社

AMER PHYSICAL SOC
DOI: 10.1103/PhysRevE.105.034308

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资金

  1. SNSF [CRSII2_147609]
  2. Spanish Ministerio de Ciencia e Innovacion (MICINN) [IJCI-2017-34300]
  3. Deutsche Forschungsgemeinschaft (DFG) [345463468]
  4. Swiss National Science Foundation (SNF) [CRSII2_147609] Funding Source: Swiss National Science Foundation (SNF)

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Cooperation and competition between pathogens can influence the number of individuals affected by a coinfection. This coevolutionary model reveals the impact of the evolution of pathogen behavior on the spread of epidemics, as well as the abrupt transitions in epidemic prevalence caused by the evolution of pathogen strategies.
Cooperation and competition between pathogens can alter the amount of individuals affected by a coinfection. Nonetheless, the evolution of the pathogens' behavior has been overlooked. Here, we consider a coevolutionary model where the simultaneous spreading is described by a two-pathogen susceptible-infected-recovered model in an either synergistic or competitive manner. At the end of each epidemic season, the pathogens species reproduce according to their fitness that, in turn, depends on the payoff accumulated during the spreading season in a hawk-and-dove game. This coevolutionary model displays a rich set of features. Specifically, the evolution of the pathogens' strategy induces abrupt transitions in the epidemic prevalence. Furthermore, we observe that the long-term dynamics results in a single, surviving pathogen species, and that the cooperative behavior of pathogens can emerge even under unfavorable conditions.

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