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Residential clustering of COVID-19 cases and efficiency of building-wide compulsory testing notices as a transmission control measure in Hong Kong.
Young, Benjamin R; Yang, Bingyi; Wu, Peng; Adam, Dillon C; Wong, Jessica Y; Ho, Faith; Gao, Huizhi; Lau, Eric H Y; Leung, Gabriel M; Cowling, Benjamin J.
  • Young BR; World Health Organization Collaborating Centre for Infectious Disease Epidemiology and Control, School of Public Health, LKS Faculty of Medicine, The University of Hong Kong, Hong Kong Special Administrative Region, China.
  • Yang B; World Health Organization Collaborating Centre for Infectious Disease Epidemiology and Control, School of Public Health, LKS Faculty of Medicine, The University of Hong Kong, Hong Kong Special Administrative Region, China.
  • Wu P; World Health Organization Collaborating Centre for Infectious Disease Epidemiology and Control, School of Public Health, LKS Faculty of Medicine, The University of Hong Kong, Hong Kong Special Administrative Region, China.
  • Adam DC; Laboratory of Data Discovery for Health, Hong Kong Science and Technology Park, New Territories, Hong Kong Special Administrative Region, China.
  • Wong JY; World Health Organization Collaborating Centre for Infectious Disease Epidemiology and Control, School of Public Health, LKS Faculty of Medicine, The University of Hong Kong, Hong Kong Special Administrative Region, China.
  • Ho F; Laboratory of Data Discovery for Health, Hong Kong Science and Technology Park, New Territories, Hong Kong Special Administrative Region, China.
  • Gao H; World Health Organization Collaborating Centre for Infectious Disease Epidemiology and Control, School of Public Health, LKS Faculty of Medicine, The University of Hong Kong, Hong Kong Special Administrative Region, China.
  • Lau EHY; World Health Organization Collaborating Centre for Infectious Disease Epidemiology and Control, School of Public Health, LKS Faculty of Medicine, The University of Hong Kong, Hong Kong Special Administrative Region, China.
  • Leung GM; World Health Organization Collaborating Centre for Infectious Disease Epidemiology and Control, School of Public Health, LKS Faculty of Medicine, The University of Hong Kong, Hong Kong Special Administrative Region, China.
  • Cowling BJ; World Health Organization Collaborating Centre for Infectious Disease Epidemiology and Control, School of Public Health, LKS Faculty of Medicine, The University of Hong Kong, Hong Kong Special Administrative Region, China.
J Infect Dis ; 2023 Apr 24.
Article in English | MEDLINE | ID: covidwho-2306208
ABSTRACT
We described the frequency of residential case clusters and the efficiency of compulsory testing in identifying cases using buildings targeted in compulsory testing and locally infected COVID-19 cases matched by residence in Hong Kong. Most of the buildings (4246/7688, 55.2%) with COVID-19 cases identified had only one reported case and 13% of the daily reported cases were detected through compulsory testing. Compulsory testing notices could be essential in attempting to eliminate infections ('zero covid') and impactful early in an epidemic but appears to be relatively inefficient in response to sustained community transmission.
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Full text: Available Collection: International databases Database: MEDLINE Type of study: Observational study Language: English Year: 2023 Document Type: Article Affiliation country: Infdis

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Full text: Available Collection: International databases Database: MEDLINE Type of study: Observational study Language: English Year: 2023 Document Type: Article Affiliation country: Infdis