The challenges of containing SARS-CoV-2 via test-trace-and-isolate.
The challenges of containing SARS-CoV-2 via test-trace-and-isolate.
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DOI:
10.1038/s41467-020-20699-8
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发表时间:
2021-01-15
影响因子:
16.6
通讯作者:
Priesemann V
中科院分区:
文献类型:
--
作者:
Contreras S;Dehning J;Loidolt M;Zierenberg J;Spitzner FP;Urrea-Quintero JH;Mohr SB;Wilczek M;Wibral M;Priesemann V
Without a cure, vaccine, or proven long-term immunity against SARS-CoV-2, test-trace-and-isolate (TTI) strategies present a promising tool to contain its spread. For any TTI strategy, however, mitigation is challenged by pre- and asymptomatic transmission, TTI-avoiders, and undetected spreaders, which strongly contribute to ”hidden" infection chains. Here, we study a semi-analytical model and identify two tipping points between controlled and uncontrolled spread: (1) the behavior-driven reproduction number of the hidden chains becomes too large to be compensated by the TTI capabilities, and (2) the number of new infections exceeds the tracing capacity. Both trigger a self-accelerating spread. We investigate how these tipping points depend on challenges like limited cooperation, missing contacts, and imperfect isolation. Our results suggest that TTI alone is insufficient to contain an otherwise unhindered spread of SARS-CoV-2, implying that complementary measures like social distancing and improved hygiene remain necessary. Test, trace, and isolate programmes are central to COVID-19 control. Here, Viola Priesemann and colleagues evaluate how to allocate scarce resources to keep numbers low, and find that if case numbers exceed test, trace and isolate capacity, there will be a self-accelerating spread.
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DOI:
10.1098/rsif.2020.0540
发表时间:
2020-12
期刊:
Journal of the Royal Society, Interface
影响因子:
--
作者:
Aliee M;Rock KS;Keeling MJ
通讯作者:
Keeling MJ
DOI:
10.3138/jammi-2020-0030
发表时间:
2020-12-01
期刊:
Journal of the Association of Medical Microbiology and Infectious Disease Canada = Journal officiel de l'Association pour la microbiologie medicale et l'infectiologie Canada
影响因子:
--
作者:
Byambasuren, Oyungerel;Cardona, Magnolia;Glasziou, Paul
通讯作者:
Glasziou, Paul
影响因子:
82.9
作者:
He, Xi;Lau, Eric H. Y.;Leung, Gabriel M.
通讯作者:
Leung, Gabriel M.
DOI:
10.3961/jpmph.20.076
发表时间:
2020-05-01
期刊:
Journal of preventive medicine and public health = Yebang Uihakhoe chi
影响因子:
--
作者:
Alimohamadi, Yousef;Taghdir, Maryam;Sepandi, Mojtaba
通讯作者:
Sepandi, Mojtaba
DOI:
10.1073/pnas.2007658117
发表时间:
2020-07-07
影响因子:
11.1
作者:
Bonaccorsi, Giovanni;Pierri, Francesco;Pammolli, Fabio
通讯作者:
Pammolli, Fabio