Indoor transmission of SARS-CoV-2

Qian, Hua; Miao, Te; Liu, Li; Zheng, Xiaohong; Luo, Danting; Li, Yuguo

doi:10.1101/2020.04.04.20053058

Cited by 185 publications

(198 citation statements)

References 15 publications

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“…That would include the vertical metallic poles shared by standing passengers. A crowded subway train is thus an ideal incubator for coronavirus transmission (Qian et al 2020).…”

Section: A Bunch Of Garbagementioning

confidence: 99%

The Subways Seeded the Massive Coronavirus Epidemic in New York City

Harris

2020

SSRN Journal

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The opinions expressed here are solely those of the author and do not represent the views of the Massachusetts Institute of Technology, Eisner Health, the National Bureau of Economic Research, or any other individual or organization. The author has received no direct or indirect remuneration for this article, and has no conflicts of interest to declare. NBER working papers are circulated for discussion and comment purposes. They have not been peerreviewed or been subject to the review by the NBER Board of Directors that accompanies official NBER publications.

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“…That would include the vertical metallic poles shared by standing passengers. A crowded subway train is thus an ideal incubator for coronavirus transmission (Qian et al 2020).…”

Section: A Bunch Of Garbagementioning

confidence: 99%

The Subways Seeded the Massive Coronavirus Epidemic in New York City

Harris

2020

SSRN Journal

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“…Targeted interventions such as contact tracing also need to consider individual-level variation in transmission: high variation can lead to superspreading events, which could result in larger numbers of contacts needing to be traced (15,16) . There are several examples of such events occurring for COVID-19, including meals, parties and other social gatherings involving close contacts (17)(18)(19) .…”

Section: Introductionmentioning

confidence: 99%

Effectiveness of isolation, testing, contact tracing and physical distancing on reducing transmission of SARS-CoV-2 in different settings

Kucharski

Klepac

Conlan³

et al. 2020

Preprint

161

187

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Background: Isolation of symptomatic cases and tracing of contacts has been used as an early COVID-19 containment measure in many countries, with additional physical distancing measures also introduced as outbreaks have grown. To maintain control of infection while also reducing disruption to populations, there is a need to understand what combination of measures -including novel digital tracing approaches and less intensive physical distancing -may be required to reduce transmission.Methods: Using a model of individual-level transmission stratified by setting (household, work, school, other) based on BBC Pandemic data from 40,162 UK participants, we simulated the impact of a range of different testing, isolation, tracing and physical distancing scenarios. As well as estimating reduction in effective reproduction number, we estimated, for a given level of COVID-19 incidence, the number of contacts that would be newly quarantined each day under different strategies.Results: Under optimistic but plausible assumptions, we estimated that combined testing and tracing strategies would reduce transmission more than mass testing or self-isolation alone (50-65% compared to 2-30%). If limits are placed on gatherings outside of home/school/work (e.g. maximum of 4 daily contacts in other settings), then manual contact tracing of acquaintances only could have a similar effect on transmission reduction as detailed contact tracing. In a scenario where there were 10,000 new symptomatic cases per day, we estimated in most contact tracing strategies, 140,000 to 390,000 contacts would be newly quarantined each day. Conclusions:Consistent with previous modelling studies and country-specific COVID-19 responses to date, our analysis estimates that a high proportion of cases would need to self-isolate and a high proportion of their contacts to be successfully traced to ensure an effective reproduction number that is below one in the absence of other measures. If combined with moderate physical distancing measures, self-isolation and contact tracing would be more likely to achieve control.

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“…Dies spielt vor allem für die aerogene Übertragung innerhalb geschlossener Räume eine Rolle, da hier kein Luftaustausch und somit keine Aerosolkonvektion oder -verdünnung auftritt. In diesem Zusammenhang ist eine aktuell im Preprint veröffentlichte Studie anzuführen, die zu dem Ergebnis kommt, dass lediglich 2 von 1245 nachgewiesenen Erkrankungen unter Freiluftbedingungen erfolgten [4].…”

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