Prevalence, Clinical Characteristics and Risk Factors of Post-COVID-19 Condition in a Multicenter Pediatric Primary and Hospital Care Cohort.

The prevalence of post-COVID-19 condition is not well defined. We describe a cohort of 244 children diagnosed with COVID-19 and followed up for 6 months, in which 4.9% of patients had persistent symptoms at 12 weeks.

Schools as a Framework for COVID-19 Epidemiological Surveillance of Children in Catalonia, Spain: A Population-Based Study.

We describe and analyze the childhood (<18 years) COVID-19 incidence in Catalonia, Spain, during the first 36 weeks of the 2020-2021 school-year and to compare it with the incidence in adults. Data on severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) tests were obtained from the Catalan Agency for Quality and Health Assessment. Overall, 7,203,663 SARS-CoV-2 tests were performed, of which 491,819 were positive (6.