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Table 1 Case definitions for community- and hospital-based RSV surveillance: Italy and WHO recommendations [36, 37]

From: Epidemiology and prevention of respiratory syncytial virus infections in children in Italy

Case definition Criteria
ILI Measured body temperature ≥ 38C°
Acute – defined as onset within the past 10 days
ARI Acute – defined as sudden onset of symptoms
Respiratory infection – defined as having at least one of the following:
Shortness of breath
Sore throat
SARI Severe – defined as requiring hospitalization
Acute – defined as onset within the past 10 days
Respiratory infection, with cough and/or shortness of breath
In infants < 6 months old, possible apnea and/or sepsis
LRTI LRTI, which can affect the bronchi, the bronchioles, and the lungs: bronchitis, bronchiolitis, pneumonia
No standard definition for its identification
  1. ARI acute respiratory infection, ILI influenza-like illness, LRTI lower respiratory tract infection, RSV respiratory syncytial virus, SARI severe acute respiratory infection, WHO World Health Organization