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abstractpubmed· Abstract 2021· item PMID:34013875

Trends in Viral Respiratory Infections During COVID-19 Pandemic, South Korea. 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.