Global estimates of the fitness advantage of SARS-CoV-2 variant Omicron.
Global estimates of the fitness advantage of SARS-CoV-2 variant Omicron.
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New variants of SARS-CoV-2 show remarkable heterogeneity in their relative fitness over both time and space. In this paper we extend the tools available for estimating the selection strength for new SARS-CoV-2 variants to a hierarchical, mixed-effects, renewal equation model. This formulation allows us to estimate selection effects at the global level while incorporating both measured and unmeasured heterogeneity among countries. Applying this model to the spread of Omicron in forty countries, we find evidence for very strong but very heterogeneous selection effects. To test whether this heterogeneity is explained by differences in the immune landscape, we considered several measures of vaccination rates and recent population-level infection as covariates, finding moderately strong, statistically significant effects. We also found a significant positive correlation between the selection advantage of Delta and Omicron at the country level, suggesting that other region-specific explanatory variables of fitness differences do exist. Our method is implemented in the Stan programming language, can be run on standard consumer-grade computing resources, and will be straightforward to apply to future variants.
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DOI:
10.1016/s1473-3099(22)00001-9
发表时间:
2022-05
期刊:
The Lancet. Infectious diseases
影响因子:
--
作者:
Hart WS;Miller E;Andrews NJ;Waight P;Maini PK;Funk S;Thompson RN
通讯作者:
Thompson RN
DOI:
10.1126/science.abg3055
发表时间:
2021-04-09
期刊:
Science (New York, N.Y.)
影响因子:
--
作者:
Davies NG;Abbott S;Barnard RC;Jarvis CI;Kucharski AJ;Munday JD;Pearson CAB;Russell TW;Tully DC;Washburne AD;Wenseleers T;Gimma A;Waites W;Wong KLM;van Zandvoort K;Silverman JD;CMMID COVID-19 Working Group;COVID-19 Genomics UK (COG-UK) Consortium;Diaz-Ordaz K;Keogh R;Eggo RM;Funk S;Jit M;Atkins KE;Edmunds WJ
通讯作者:
Edmunds WJ
影响因子:
17.1
作者:
通讯作者:
--
DOI:
10.1126/science.abn4947
发表时间:
2022-05-06
期刊:
Science (New York, N.Y.)
影响因子:
--
作者:
Pulliam JRC;van Schalkwyk C;Govender N;von Gottberg A;Cohen C;Groome MJ;Dushoff J;Mlisana K;Moultrie H
通讯作者:
Moultrie H
影响因子:
64.5
作者:
Korber, Bette;Fischer, Will M.;Montefiori, David C.
通讯作者:
Montefiori, David C.