Table 1.

Definitions of Parechovirus A Episodes, Acute Respiratory Infection, and Acute Gastroenteritis

Term	Definition
PeV episode	≥1 consecutive swab(s) where PeV was detected. A new episode was determined when a different PeV genotype was detected or the same genotype was identified after ≥2 negative swabs or at least 30 d after the last positive swab [22].
ARI symptoms	Presence of nasal congestion/discharge, dry or wet-sounding cough, wheezing, shortness of breath, or doctor-diagnosed otitis media or pneumonia [22]
AGE symptoms	≥3 loose stools recorded during a 24-h period [23]
Symptomatic episode	ARI, AGE, or fever only symptoms present within 7 d before or after the first positive PeV detection [22, 23].

Abbreviations: AGE, acute gastroenteritis; ARI, acute respiratory infection; PeV, parechovirus A.