COVID-19 hospitalization rates in adolescents peaked in January 2021; ICU care common

This observational surveillance study from the COVID-NET network analyzed COVID-19 hospitalizations among adolescents aged 12-17 years with laboratory-confirmed infection across 14 states from March 1, 2020, to April 24, 2021. The study design was descriptive, reporting population-level hospitalization rates and clinical outcomes without a defined comparator group or specific intervention. The intervention or exposure was not reported, limiting causal interpretation of the findings.

The main results showed hospitalization rates peaked at 2.1 per 100,000 adolescents in early January 2021, declined to 0.6 per 100,000 by mid-March, and rose again to 1.3 per 100,000 in April. Among adolescents who were hospitalized, nearly one-third required intensive care unit admission, and 5% required invasive mechanical ventilation. Notably, no deaths occurred among the hospitalized adolescents during the surveillance period. The study did not report absolute numbers for these outcomes, effect sizes, p-values, or confidence intervals.

Safety and tolerability data were not reported. Key limitations include the observational, descriptive nature of the surveillance data, which prevents causal inference. No statistical testing was performed, and the absence of absolute numbers and confidence intervals limits precision. The practice relevance is restrained; these data describe the burden and severity of adolescent COVID-19 hospitalizations during the surveillance period but do not support specific clinical recommendations without more rigorous comparative analysis.