RT Book, Section A1 Parker, Michelle W. A1 Cruz, Andrea T. A2 Shah, Samir S. A2 Kemper, Alex R. A2 Ratner, Adam J. SR Print(0) ID 1157322235 T1 Gastroenteritis T2 Pediatric Infectious Diseases: Essentials for Practice, 2e YR 2019 FD 2019 PB McGraw-Hill Education PP New York, NY SN 9781259861536 LK accesspediatrics.mhmedical.com/content.aspx?aid=1157322235 RD 2024/04/19 AB Gastroenteritis is either the acute onset of vomiting or the acute onset of diarrhea with or without vomiting. Vomiting is the acute onset of forceful expulsion of gastric secretions through the oral cavity and should be differentiated from posttussive emesis and gastroesophageal reflux. Diarrhea is defined as loose or watery stools that exceed the child’s usual number of daily bowel movements by two or more.1Dysentery is the presence of bloody diarrhea and fever.