<prompt> Persistent diarrhea in infants -7 days14 days21 days1 month  <response>: Ans. is b i.e., 14 days DIARRHEA IN CHILDRENDiarrhoea- It is the passage of liquid or watery stool more than three times a day, However it is the recent change in consistency of stools rather than the number of stools that is the more important feature.Persistent diarrhea- It is defined as diarrhoea of presumed infectious origin that begins acutely and lasts for 14 days or more 2-4 weeks.Chronic diarrhea- Diarrhea lasting 4 weeks.Dysentery- Characterized by the presence of blood and pus in the stools, abdominal cramps and fever.o In India, rotavirus and ETEC accounts for nearly half the total diarrheal episodes among children. 