Dear Editor,

Although most cases of COVID-19 caused by SARS-CoV-2 Omicron variants are mild or asymptomatic worldwide, coinfection with SARS-CoV-2 and other respiratory pathogens may still aggravate the severity of the illness.1,2 The current literature indicates that coinfection with COVID-19 could occur in 3.70%–9.7% of patients.1,3,4 The proportion of bacterial, and other respiratory viral coinfections may range from 3.02% to 9.7% and 5.41% to 6.61%, respectively. However, these studies demonstrated that coinfections with respiratory pathogens are not common. Thus, antibacterial therapy and diagnostic tests are considered to be unnecessary upon admission for most patients hospitalized with COVID-19.3,5

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