Skip to main content

Table 1 Operationalization of commonly used case-definitions

From: Incidence of viral respiratory infections in a prospective cohort of outpatient and hospitalized children aged ≤5 years and its associated cost in Buenos Aires, Argentina

• Severe acute lower respiratory infection: hospitalized children who had cough or difficulty breathing (i.e., having tachypnea, or oxygen requirement) with retractions [3]
• Severe acute respiratory infection: hospitalized children with subjective fever and cough [27]
• Influenza-like illness: children who had sought care in emergency room with subjective fever and cough [22]