About: Evidence for probable aerosol transmission of SARS-CoV-2 in a poorly ventilated restaurant

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An Entity of Type : schema:ScholarlyArticle, within Data Space : covidontheweb.inria.fr associated with source document(s)

Attributes	Values
type	Academic Article research paper schema:ScholarlyArticle
isDefinedBy	Covid-on-the-Web dataset
title	Evidence for probable aerosol transmission of SARS-CoV-2 in a poorly ventilated restaurant
Creator	Li, Yuguo Qian, Hua Wei, Jianjian Kang, Min Xiao, Shenglan »more»
source	MedRxiv
abstract	Background: The role of aerosols in the transmission of SARS-CoV-2 remains debated. We analysed an outbreak involving three non-associated families in Restaurant X in Guangzhou, China, and assessed the possibility of aerosol transmission of SARS-CoV-2 and characterize the associated environmental conditions. Methods: We collected epidemiological data, obtained a video record and a patron seating-arrangement from the restaurant, and measured the dispersion of a warm tracer gas as a surrogate for exhaled droplets from the suspected index patient. Computer simulations were performed to simulate the spread of fine exhaled droplets. We compared the in-room location of subsequently infected cases and spread of the simulated virus-laden aerosol tracer. The ventilation rate was measured using the tracer decay method. Results: Three families (A, B, C), 10 members of which were subsequently found to have been infected with SARS-CoV-2 at this time, or previously, ate lunch at Restaurant X on Chinese New Year's Eve (January 24, 2020) at three neighboring tables. Subsequently, three members of family B and two members of family C became infected with SARS-CoV-2, whereas none of the waiters or 68 patrons at the remaining 15 tables became infected. During this occasion, the ventilation rate was 0.75-1.04 L/s per person. No close contact or fomite contact was observed, aside from back-to-back sitting by some patrons. Our results show that the infection distribution is consistent with a spread pattern representative of exhaled virus-laden aerosols. Conclusions: Aerosol transmission of SARS-CoV-2 due to poor ventilation may explain the community spread of COVID-19.
has issue date	2020-04-22(xsd:dateTime)
bibo:doi	10.1101/2020.04.16.20067728
has license	medrxiv
sha1sum (hex)	cb68c8658bb181bb7e84f6a34145b3a95c22361a
schema:url	https://doi.org/10.1101/2020.04.16.20067728
resource representing a document's title	Evidence for probable aerosol transmission of SARS-CoV-2 in a poorly ventilated restaurant
resource representing a document's body	covid:cb68c8658bb181bb7e84f6a34145b3a95c22361a#body_text
is schema:about of	named entity 'ventilated' named entity 'MAIN' covid:arg/cb68c8658bb181bb7e84f6a34145b3a95c22361a named entity 'Alaska' named entity 'mechanical ventilation' »more»

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