Literature DB >> 34159063

Asymptomatic COVID-19 in South Africa - implications for the control of transmission.

M Paleker1,2, Y A Tembo3,4, M-A Davies5,6, H Mahomed1,2, D Pienaar3,4, S A Madhi7,8, K McCarthy9.   

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.
© 2021 The Union.

Entities:  

Keywords:  SARS-CoV-2; essential services; occupational exposure; subclinical infection; symptom

Year:  2021        PMID： 34159063      PMCID： PMC8202632          DOI： 10.5588/pha.20.0069

Source DB:  PubMed          Journal:  Public Health Action        ISSN： 2220-8372


  8 in total

1.  Effectiveness of isolation, testing, contact tracing, and physical distancing on reducing transmission of SARS-CoV-2 in different settings: a mathematical modelling study.

Authors:  Adam J Kucharski; Petra Klepac; Andrew J K Conlan; Stephen M Kissler; Maria L Tang; Hannah Fry; Julia R Gog; W John Edmunds
Journal:  Lancet Infect Dis       Date:  2020-06-16       Impact factor: 25.071

2.  Seroprevalence of immunoglobulin M and G antibodies against SARS-CoV-2 in China.

Authors:  Xin Xu; Jian Sun; Sheng Nie; Huiyuan Li; Yaozhong Kong; Min Liang; Jinlin Hou; Xianzhong Huang; Dongfeng Li; Tean Ma; Jiaqing Peng; Shikui Gao; Yong Shao; Hong Zhu; Johnson Yiu-Nam Lau; Guangyu Wang; Chunbao Xie; Li Jiang; Ailong Huang; Zhenglin Yang; Kang Zhang; Fan Fan Hou
Journal:  Nat Med       Date:  2020-06-05       Impact factor: 53.440

3.  Prevalence of SARS-CoV-2 in Spain (ENE-COVID): a nationwide, population-based seroepidemiological study.

Authors:  Marina Pollán; Beatriz Pérez-Gómez; Roberto Pastor-Barriuso; Jesús Oteo; Miguel A Hernán; Mayte Pérez-Olmeda; Jose L Sanmartín; Aurora Fernández-García; Israel Cruz; Nerea Fernández de Larrea; Marta Molina; Francisco Rodríguez-Cabrera; Mariano Martín; Paloma Merino-Amador; Jose León Paniagua; Juan F Muñoz-Montalvo; Faustino Blanco; Raquel Yotti
Journal:  Lancet       Date:  2020-07-06       Impact factor: 79.321

4.  Evidence Supporting Transmission of Severe Acute Respiratory Syndrome Coronavirus 2 While Presymptomatic or Asymptomatic.

Authors:  Nathan W Furukawa; John T Brooks; Jeremy Sobel
Journal:  Emerg Infect Dis       Date:  2020-06-21       Impact factor: 6.883

5.  Presymptomatic SARS-CoV-2 Infections and Transmission in a Skilled Nursing Facility.

Authors:  Melissa M Arons; Kelly M Hatfield; Sujan C Reddy; Anne Kimball; Allison James; Jesica R Jacobs; Joanne Taylor; Kevin Spicer; Ana C Bardossy; Lisa P Oakley; Sukarma Tanwar; Jonathan W Dyal; Josh Harney; Zeshan Chisty; Jeneita M Bell; Mark Methner; Prabasaj Paul; Christina M Carlson; Heather P McLaughlin; Natalie Thornburg; Suxiang Tong; Azaibi Tamin; Ying Tao; Anna Uehara; Jennifer Harcourt; Shauna Clark; Claire Brostrom-Smith; Libby C Page; Meagan Kay; James Lewis; Patty Montgomery; Nimalie D Stone; Thomas A Clark; Margaret A Honein; Jeffrey S Duchin; John A Jernigan
Journal:  N Engl J Med       Date:  2020-04-24       Impact factor: 91.245

6.  The contribution of asymptomatic SARS-CoV-2 infections to transmission on the Diamond Princess cruise ship.

Authors:  Jon C Emery; Timothy W Russell; Yang Liu; Joel Hellewell; Carl Ab Pearson; Gwenan M Knight; Rosalind M Eggo; Adam J Kucharski; Sebastian Funk; Stefan Flasche; Rein Mgj Houben
Journal:  Elife       Date:  2020-08-24       Impact factor: 8.140

7.  Quantifying SARS-CoV-2 transmission suggests epidemic control with digital contact tracing.

Authors:  Luca Ferretti; Chris Wymant; David Bonsall; Christophe Fraser; Michelle Kendall; Lele Zhao; Anel Nurtay; Lucie Abeler-Dörner; Michael Parker
Journal:  Science       Date:  2020-03-31       Impact factor: 47.728

8.  Feasibility of controlling COVID-19 outbreaks by isolation of cases and contacts.

Authors:  Joel Hellewell; Sam Abbott; Amy Gimma; Nikos I Bosse; Christopher I Jarvis; Timothy W Russell; James D Munday; Adam J Kucharski; W John Edmunds; Sebastian Funk; Rosalind M Eggo
Journal:  Lancet Glob Health       Date:  2020-02-28       Impact factor: 26.763
  8 in total
  5 in total

1.  Frontline healthcare workers' experiences of providing care during the COVID-19 pandemic at a COVID-19 centre in Bulawayo, Zimbabwe: A phenomenological study.

Authors:  Idah Moyo; Azwihangwisi H Mavhandu-Mudzusi; Clara Haruzivishe
Journal:  Curationis       Date:  2022-06-30

2.  SARS-CoV-2 infection and antibody seroprevalence in routine surveillance patients, healthcare workers and general population in Kita region, Mali: an observational study 2020-2021.

Authors:  Dagmar Alber; Fadima Cheick Haidara; Juho Luoma; Laura Adubra; Per Ashorn; Ulla Ashorn; Henry Badji; Elaine Cloutman-Green; Fatoumata Diallo; Rikhard Ihamuotila; Nigel Klein; Owen Martell; Uma U Onwuchekwa; Oumar Samaké; Samba O Sow; Awa Traore; Kevin Wilson; Camilla Ducker; Yue-Mei Fan
Journal:  BMJ Open       Date:  2022-06-16       Impact factor: 3.006

3.  Occurrence and transmission potential of asymptomatic and presymptomatic SARS-CoV-2 infections: Update of a living systematic review and meta-analysis.

Authors:  Diana Buitrago-Garcia; Aziz Mert Ipekci; Leonie Heron; Hira Imeri; Lucia Araujo-Chaveron; Ingrid Arevalo-Rodriguez; Agustín Ciapponi; Muge Cevik; Anthony Hauser; Muhammad Irfanul Alam; Kaspar Meili; Eric A Meyerowitz; Nirmala Prajapati; Xueting Qiu; Aaron Richterman; William Gildardo Robles-Rodriguez; Shabnam Thapa; Ivan Zhelyazkov; Georgia Salanti; Nicola Low
Journal:  PLoS Med       Date:  2022-05-26       Impact factor: 11.613

4.  Community SARS-CoV-2 seroprevalence before and after the second wave of SARS-CoV-2 infection in Harare, Zimbabwe.

Authors:  Arun Fryatt; Victoria Simms; Tsitsi Bandason; Nicol Redzo; Ioana D Olaru; Chiratidzo E Ndhlovu; Hilda Mujuru; Simbarashe Rusakaniko; Michael Hoelscher; Raquel Rubio-Acero; Ivana Paunovic; Andreas Wieser; Prosper Chonzi; Kudzai Masunda; Rashida A Ferrand; Katharina Kranzer
Journal:  EClinicalMedicine       Date:  2021-10-24

5.  SARS-CoV-2 infection in Africa: a systematic review and meta-analysis of standardised seroprevalence studies, from January 2020 to December 2021.

Authors:  Hannah C Lewis; Harriet Ware; Mairead Whelan; Lorenzo Subissi; Zihan Li; Xiaomeng Ma; Anthony Nardone; Marta Valenciano; Brianna Cheng; Kim Noel; Christian Cao; Mercedes Yanes-Lane; Belinda L Herring; Ambrose Talisuna; Nsenga Ngoy; Thierno Balde; David Clifton; Maria D Van Kerkhove; David Buckeridge; Niklas Bobrovitz; Joseph Okeibunor; Rahul K Arora; Isabel Bergeri
Journal:  BMJ Glob Health       Date:  2022-08
  5 in total

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