Reconstruction of Transmission Pairs for COVID-19 in family - - PowerPoint PPT Presentation

Reconstruction of Transmission Pairs for COVID-19 in family clusters by Crowdsourcing data

Xiao-Ke XU Dalian Minzu Univerisity July 30, 2020

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Starting from mid-January, most of the provincial and urban level health authorities in China began to report detailed information regarding COVID-19 cases. Patient Yue, female, 42, resident in Building C, XX housing estate, Tianjia’an District, Huainan City, Anhui Province. Arrived in Huainan from Hefei on 20

• January. Had close contacts with confirmed cases Fu and Yue in Fengtai County

during 23-30 January. Showed fever symptom on 1 February, admitted to Chaoyang Hospital on 4 February, tentatively diagnosed with COVID-19 on 5 February, confirmed on 6 February. Patient is currently quarantined and treated in the destined hospital, with mild clinical symptoms.

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The reports were published via official websites and/or social media platforms. We collected all of the case disclosure manually. 9936 records, from 27 provincial and 264 urban health authorities in China outside Hubei province, from January 19, 2020 to March 5.

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Red or blue shades indicate an increased or decreased hazard

• f infection within households

relative to outside of households, respectively. The hazard of being infected within households is higher for age groups of young (<18) and elderly (>65) people, whereas the hazard of being infected outside of households is higher for age groups between 18 and 64 years. Primary cases of elderly (>65) people are more prone to cause household infections.

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Red or blue shades indicate an increased or decreased hazard

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relative to outside of households, respectively.

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Hazard of infection between different genders is higher for households than non-household transmission

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Red, green and blue nodes denote primary cases, household secondary cases and non-household secondary cases, respectively.

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(1) bans on entertainment and public gatherings; (2) broad restrictions on public service including healthcare, schooling, shopping and restaurants; (3) initiation of a level-1 response entailing systematic testing and isolation of confirmed cases; (4) suspension of intra-city public transport; (5) suspension of travel between cities; (6) reporting of confirmed cases; (7) recruitment of governmental staff and volunteers to enforce quarantine and social distancing.

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