We compared weekly positivity rates of 8 respiratory viruses in South Korea during 2010-2019 and 2020. The overall mean positivity rate for these viruses decreased from 54.7% in 2010-2019 to 39.1% in 2020. Pandemic control measures might have reduced the incidence of many, but not all, viral respiratory infections.
Keywords: 2019 novel coronavirus disease; COVID-19; SARS-CoV-2; South Korea; acute respiratory infections; adenoviruses; bocaviruses; coronavirus disease; coronaviruses; human coronaviruses; influenza; laboratory surveillance; respiratory infections; respiratory syncytial virus; rhinoviruses; severe acute respiratory syndrome coronavirus 2; viruses; zoonoses.