Children are often asymptomatic & shed virus for longer than expected

In this case series of 91 children with COVID-19 in Korea, 22.0% were asymptomatic. Only 8.5% of symptomatic cases were diagnosed at the time of symptom onset, while 66.2% had unrecognized symptoms before diagnosis and 25.4% developed symptoms after diagnosis; SARS-CoV-2 RNA was detected for a mean of 17.6 days overall and 14.1 days in asymptomatic cases.

These findings demonstrate that symptom screening fails to identify most COVID-19 cases in children, and SARS-CoV-2 RNA in children is detected for an unexpectedly long time.

Clinical Characteristics and Viral RNA Detection in Children With Coronavirus Disease 2019 in the Republic of Korea – PubMed

doi: 10.1001/jamapediatrics.2020.3988. Online ahead of print. 1 Department of Pediatrics, Seoul Metropolitan Government-Seoul National University Boramae Medical Center, Seoul, Korea. 2 Department of Pediatrics, Seoul National University College of Medicine, Seoul, Korea. 3 Department of Pediatrics, Seoul Medical Center, Seoul, Korea. 4 Department of Pediatrics, Hongseong Medical Center, Hongseong, Korea.

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