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Serological identification of SARS-CoV-2 infections among children visiting a hospital during the initial Seattle outbreak
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Serological identification of SARS-CoV-2 infections among children visiting a hospital during the initial Seattle outbreak
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Journal Article
Serological identification of SARS-CoV-2 infections among children visiting a hospital during the initial Seattle outbreak
2020
Overview
Children are strikingly underrepresented in COVID-19 case counts. In the United States, children represent 22% of the population but only 1.7% of confirmed SARS-CoV-2 cases as of April 2, 2020. One possibility is that symptom-based viral testing is less likely to identify infected children, since they often experience milder disease than adults. Here, to better assess the frequency of pediatric SARS-CoV-2 infection, we serologically screen 1,775 residual samples from Seattle Children’s Hospital collected from 1,076 children seeking medical care during March and April of 2020. Only one child was seropositive in March, but seven were seropositive in April for a period seroprevalence of ≈1%. Most seropositive children (6/8) were not suspected of having had COVID-19. The sera of seropositive children have neutralizing activity, including one that neutralized at a dilution > 1:18,000. Therefore, an increasing number of children seeking medical care were infected by SARS-CoV-2 during the early Seattle outbreak despite few positive viral tests.
COVID-19 disease is less common in children than adults, but the extent to which SARS-CoV-2 infections are missed through symptom-driven testing is not well understood. In this study, the authors show that approximately 1% of children seeking care for reasons other than COVID-19 at a Seattle hospital in March/April 2020 were seropositive for SARS-CoV-2.
Publisher
Nature Publishing Group UK,Nature Publishing Group,Nature Portfolio
Subject
/ 82/1
/ 82/80
/ Adults
/ Betacoronavirus - isolation & purification
/ Child
/ Children
/ Clinical Laboratory Techniques - methods
/ Coronavirus Infections - blood
/ Coronavirus Infections - diagnosis
/ Coronavirus Infections - epidemiology
/ Coronavirus Infections - virology
/ COVID-19
/ Dilution
/ Female
/ Humanities and Social Sciences
/ Humans
/ Infant
/ Male
/ Pneumonia, Viral - diagnosis
/ Pneumonia, Viral - epidemiology
/ Science
/ Serology
/ Severe acute respiratory syndrome coronavirus 2
