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Asymptomatic COVID-19 infections have a substantial role in the spread of SARS-CoV-2. Although often overlooked, asymptomatic persons may be contagious and facilitate transmission of SARS-CoV-2 to healthy people. Asymptomatic COVID-19 cases can transmit SARS-CoV-2 to others, although it has been reported that these patients are responsible for fewer secondary infections than symptomatic cases [1]. According to Oran et al., asymptomatic cases account for 40–45% of SARS-CoV-2 infections and can transmit the virus to others for an extended period, probably longer than 14 days [2, 3].

In the literature, there is evidence that the high viral load, rather than symptoms, might be the predominant driver of SARS-CoV-2 transmission [4]. Noteworthy is the fact that the viral load of asymptomatic COVID-19 cases is comparable to or higher than that of symptomatic cases [5, 6]. Therefore, asymptomatology and …