Asymptomatic COVID-19 in South Africa – implications for the control of transmission | Zendy

Masudah Paleker | Zendy; Yamanya Tembo | Zendy; M-A. Davies | Zendy; Hassan Mahomed | Zendy; D. Pienaar | Zendy; Shabir A. Madhi | Zendy; Kerrigan McCarthy | Zendy

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

Author(s) -

Masudah Paleker,

Yamanya Tembo,

M-A. Davies,

Hassan Mahomed,

D. Pienaar,

Shabir A. Madhi,

Kerrigan McCarthy

Publication year - 2021

Publication title -

public health action

Language(s) - English

Resource type - Journals

ISSN - 2220-8372

DOI - 10.5588/pha.20.0069

Subject(s) - asymptomatic , covid-19 , quarantine , medicine , pandemic , epidemiology , transmission (telecommunications) , contact tracing , psychological intervention , pediatrics , virology , pathology , disease , outbreak , infectious disease (medical specialty) , computer science , telecommunications , psychiatry

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.

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