By February 2020, the novel coronavirus SARS CoV-2 was identified as the causative agent for COVID-19.1,2 Genome analysis of this virus revealed a high similarity to SARS CoV-1, the coronavirus that caused severe acute respiratory syndrome (SARS) in 2002–2003.2−4 Like SARS CoV-1, which resulted in 799 deaths among the 8464 probable cases,5 SARS CoV-2 can induce fever, coughing, and difficulty breathing that rapidly becomes more serious in some cases.