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Asymptomatic COVID-19 in South Africa - implications for the control of transmission.
Paleker, M; Tembo, Y A; Davies, M-A; Mahomed, H; Pienaar, D; Madhi, S A; McCarthy, K.
Affiliation
  • Paleker M; Division of Health Systems and Public Health, Department of Global Health, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town, South Africa.
  • Tembo YA; Metro Health Services, Western Cape Department of Health, Cape Town, South Africa.
  • Davies MA; School of Public Health and Family Medicine, University of Cape Town, Cape Town, South Africa.
  • Mahomed H; Rural Health Services, Western Cape Department of Health, Cape Town, South Africa.
  • Pienaar D; Health Impact Assessment, Western Cape Department of Health, Cape Town, South Africa.
  • Madhi SA; Centre for Infectious Disease Epidemiology and Research, School of Public Health and Family Medicine, University of Cape Town, Cape Town, South Africa.
  • McCarthy K; Division of Health Systems and Public Health, Department of Global Health, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town, South Africa.
Public Health Action ; 11(2): 58-60, 2021 Jun 21.
Article in En | MEDLINE | ID: mdl-34159063
ABSTRACT
Asymptomatic COVID-19 may contribute significantly to the pandemic trajectory based on global biological, epidemiological and modelling evidence. A retrospective analysis was done to determine the proportion of asymptomatic COVID-19 in the workplace during the lockdown period from 27 March to 31 May 2020. We found that nearly 45% of cases were asymptomatic at the time of the first test. This high proportion of asymptomatic COVID-19 cases has implications for interventions, such as enforcing quarantine of all close contacts of COVID-19 cases regardless of symptoms.
Le COVID-19 a symptomatique pourrait contribuer significativement à la trajectoire de la pandémie en se basant sur des preuves mondiales, biologique et épidémiologiques, et en modélisant les preuves. Une analyse rétrospective a été réalisée afin de décrire la proportion d'infections asymptomatiques de SARS-CoV-2 parmi les clusters essentiels sur les lieux de travail en Afrique du Sud où des investigations de flambée ont été réalisées durant la période de confinement très restrictive du 27 mars au 31 mai 2020. Près de 45% des cas étaient asymptomatique lors du premier test. Cette proportion élevée des cas de COVID-19 asymptomatiques a des implications en ce qui concerne les interventions nonpharmaceutique comme le renforcement de la quarantaine de tous les contacts étroits des cas de SARS-CoV-2 sans tenir compte des symptômes.
Key words

Full text: 1 Database: MEDLINE Language: En Journal: Public Health Action Year: 2021 Type: Article Affiliation country: South Africa

Full text: 1 Database: MEDLINE Language: En Journal: Public Health Action Year: 2021 Type: Article Affiliation country: South Africa