The reproduction number and its probability distribution for stochastic viral dynamics.
The reproduction number and its probability distribution for stochastic viral dynamics.
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随机病毒动力学的繁殖数及其概率分布。
DOI:
10.1098/rsif.2023.0400
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发表时间:
2024-01
期刊:
影响因子:
--
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中科院分区:
文献类型:
--
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We consider stochastic models of individual infected cells. The reproduction number, R, is understood as a random variable representing the number of new cells infected by one initial infected cell in an otherwise susceptible (target cell) population. Variability in R results partly from heterogeneity in the viral burst size (the number of viral progeny generated from an infected cell during its lifetime), which depends on the distribution of cellular lifetimes and on the mechanism of virion release. We analyse viral dynamics models with an eclipse phase: the period of time after a cell is infected but before it is capable of releasing virions. The duration of the eclipse, or the subsequent infectious, phase is non-exponential, but composed of stages. We derive the probability distribution of the reproduction number for these viral dynamics models, and show it is a negative binomial distribution in the case of constant viral release from infectious cells, and under the assumption of an excess of target cells. In a deterministic model, the ultimate in-host establishment or extinction of the viral infection depends entirely on whether the mean reproduction number is greater than, or less than, one, respectively. Here, the probability of extinction is determined by the probability distribution of R, not simply its mean value. In particular, we show that in some cases the probability of infection is not an increasing function of the mean reproduction number.
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DOI:
10.1007/978-1-4939-0888-2_10
发表时间:
2014
期刊:
Methods in molecular biology (Clifton, N.J.)
影响因子:
--
作者:
Bagga S;Bouchard MJ
通讯作者:
Bouchard MJ
影响因子:
4.6
作者:
Beauchemin CA;Miura T;Iwami S
通讯作者:
Iwami S
影响因子:
--
作者:
Iwanami S;Kakizoe Y;Morita S;Miura T;Nakaoka S;Iwami S
通讯作者:
Iwami S
影响因子:
4.3
作者:
Liao LE;Carruthers J;Smither SJ;CL4 Virology Team;Weller SA;Williamson D;Laws TR;García-Dorival I;Hiscox J;Holder BP;Beauchemin CAA;Perelson AS;López-García M;Lythe G;Barr JN;Molina-París C
通讯作者:
Molina-París C
影响因子:
4.3
作者:
Pearson JE;Krapivsky P;Perelson AS
通讯作者:
Perelson AS