The COVID-19 pandemic crisis has had a staggering impact worldwide. Confirmed cases have increased exponentially and the number of infected individuals has since exceeded a million [ ]. It is however important to realize that with limitations in testing, true infection rates may in fact be much higher [ ]. In addition, presymptomatic transmission of infected individuals has been documented in China and lately confirmed in Singapore [ - ]. Our local data suggests that this can occur in 6.4% of patients but has been reported to be as high as 30% in other studies [ , ].
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