2.1 Patients and sample collection
During 2018-2020 (a two-year period), 302 stool samples were collected
from children aged under 5 years with acute gastroenteritis admitted to
Chiangrai Prachanukroh Hospital in Chiang Rai, Thailand. Acute
gastroenteritis was basically defined as the occurrence of watery or
loose stools in a period of 24 hours before the visit. Samples were
stored at -20°C until further investigation. The study protocol was
approved by the Ethics Committee of Chiangrai Prachanukroh Hospital
(CR0032.102/8115 and CR0032.102/Research/EC518).