Abstract
The pandemic spread of severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2), the cause of COVID-19, has placed lives and economies of many countries under unprecedented stress. Many countries have shut schools and workplaces and imposed physical distancing to reduce virus transmission, in an effort to prevent the number of COVID-19 cases from overwhelming health-care systems. Such measures, however, are not economically sustainable. Schools and workplaces will have to be reopened. An important challenge for returning to normality is the prevalence of asymptomatic infection and the question of whether such individuals could sustain community virus transmission.
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