Journal
PUBLIC HEALTH ACTION
Volume 11, Issue 2, Pages 58-60Publisher
INT UNION AGAINST TUBERCULOSIS LUNG DISEASE (I U A T L D)
DOI: 10.5588/pha.20.0069
Keywords
SARS-CoV-2; symptom subclinical infection; essential services; occupational exposure
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Research revealed that during the lockdown period, nearly 45% of COVID-19 cases in the workplace were asymptomatic. This indicates the significant impact of asymptomatic carriers on the pandemic trajectory, advocating for the quarantine of all close contacts of COVID-19 cases regardless of symptoms.
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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