An epidemic of coronavirus SARS-CoV-2 has become the focus of scientific attention.1 The high infectivity of SARS-CoV-2 and rapid rise in the number of patients affected reflects the lack of preexisting immunity as reported by the World Health Organization (https://www.who.int/emergencies/diseases/novel-coronavirus-2019). The clinical presentation of coronavirus disease 2019 (COVID-19) is variable, ranging from lack of symptoms to severe respiratory distress and multiorgan failure requiring intensive care unit admission and mechanical ventilation.
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Quinti et al. (2020) studied this question.