Table 1.

WHO‐recommended case definitions for RSV and influenza surveillance

	RSV	Influenza
Hospital‐based	Extended SARI onset within past 10 d cough (cough or shortness of breath) In infants less than 6 mo age Apnea (temporary cessation of breathing from any cause) Sepsis o fever more than 37.5°C or hypothermia o shock (lethargy, fast breathing, cold skin, prolonged capillary refill, or weak pulse), and o seriously ill without apparent cause	SARI onset within past 10 d cough (cough or shortness of breath) history of fever or measured fever of 38°C or more
Community‐based	ARI sudden onset At least one of cough sore throat shortness of breath coryza	ILI onset within past 10 d measured fever of 38°C or more, and cough