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Callejas-Caballero, Ignacio; Ruedas-López, Alba; Berzosa-Sánchez, Arantxa; Illán-Ramos, Marta; Joyanes-Abancens, Belén; Bodas-Pinedo, Andrés; Guillén-Martín, Sara; Soto-Sánchez, Beatriz; García-Bermejo, Isabel; Molina-Arana, David; Alós, Juan-Ignacio; Baos-Muñoz, Elvira; Delgado-Iribarren, Alberto; Fuentes-Ferrer, Manuel E; Ramos-Amador, José T
Children, 05/2022, Letnik: 9, Številka: 5Journal Article
Background: SARS-CoV-2 was a global pandemic. Children develop a mild disease and may have a different rate of seroconversion compared to adults. The objective was to determine the number of seronegative patients in a pediatric cohort. We also reviewed the clinical−epidemiological features associated with seroconversion. Methods: A multicenter prospective observational study during September−November 2020, of COVID-19, confirmed by reverse transcription-polymerase chain reaction. Data were obtained 4−8 weeks after diagnosis. Blood samples were collected to investigate the humoral response, using three different serological methods. Results: A total of 111 patients were included (98 symptomatic), 8 were admitted to hospital, none required an Intensive Care Unit visit. Median age: 88 months (IQR: 24−149). Median time between diagnosis and serological test: 37 days (IQR: 34−44). A total of 19 patients were non-seroconverters when using three serological techniques (17.1%; 95% CI: 10.6−25.4); most were aged 2−10 years (35%, p < 0.05). Univariate analysis yielded a lower rate of seroconversion when COVID-19 confirmation was not present amongst household contacts (51.7%; p < 0.05). Conclusions: There was a high proportion of non-seroconverters. This is more commonly encountered in childhood than in adults. Most seronegative patients were in the group aged 2−10 years, and when COVID-19 was not documented in household contacts. Most developed a mild disease. Frequently, children were not the index case within the family.
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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in: SICRIS
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