Original Investigation

Acute Respiratory Tract Infections and Severe Disease Among Hospitalized Children

JAMA Network Open 10.1001/jamanetworkopen.2026.17575

June 09, 2026 at 11:00 AM EDT

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What factors are associated with risk of severe disease among children hospitalized with acute respiratory infections?In this cohort study of 2585 children hospitalized with acute respiratory tract infections, 21.3% developed severe disease. Having 2 or more chronic conditions and being transferred from a referring hospital were associated with a higher risk of severe outcomes.These findings suggest that understanding the risks of severe disease can help inform clinical management and resource allocation in caring for hospitalized children with respiratory infections.

Corresponding Author: Haifa Mtaweh, MD, PhD, Department of Critical Care Medicine, The Hospital for Sick Children, 555 University Ave, Toronto, ON M5G 1X8, Canada (haifa.mtaweh@sickkids.ca).

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