Table 2.

Surveillance case definitions for RSV, 2017‐18

	RSV	Influenza
In patient	Extended SARI Severe (overnight hospitalization) Acute (onset within past 10 d) Respiratory infection (cough or shortness of breath) In infants <6 mo age Apneaa Sepsis Fever more than 37.5°C or hypothermia Shockb Seriously ill without apparent cause	SARI Severe (overnight hospitalization) Acute (onset within past 10 d) History of fever or measured fever of 38°C or more Respiratory infection (cough or shortness of breath)
Out patient	ARI Acute (onset within past 10 d) Respiratory infection (at least one of cough, sore throat, shortness of breath or runny nose) Extended ILI Acute (onset within past 10 d) Respiratory infection (cough)	ILI Onset within past 10 d Measured fever of 38°C or more, and Cough

Abbreviations: ARI, acute respiratory infection; ILI, influenza‐like illness; RSV, respiratory syncytial virus; SARI, severe acute respiratory infection.

^aApnea defined as temporary cessation of breathing from any cause.

^bShock defined as lethargy, fast breathing, cold skin, prolonged capillary refill or weak pulse.