Etiology of Diarrhea Infective Non e Viruses Allergic Symptomatic Bacteria Inappropriate feeding Parasites Food intolerance Fungi Climate
11 Etiology of Diarrhea Infective Non infective Viruses Bacteria Parasites Fungi Allergic Symptomatic Inappropriate feeding Food intolerance Climate
Viral enteropathogens Viral enteropathogens cause most illnesses in pediatric population Rotavirus(morn than 50% acute diarrhea) Astrovirus Norwalk virus Coronavirus calicivirus Enteric adenovirus(serotypes 40 and 41) 12
12 Viral Enteropathogens Viral enteropathogens cause most illnesses in pediatric population. ◼ Rotavirus (morn than 50% acute diarrhea) ◼ Astrovirus ◼ Norwalk virus ◼ Coronavirus ◼ Calicivirus ◼ Enteric adenovirus (serotypes 40 and 41)
Rotavirus 鑾泰 13
13 Rotavirus
Bacterial Enteropathogens The most common cause of childhood diarrhea second only to the viral enteropathogens ■ Escherichia coli EPEC. ETEC. ETC: EHEC: EAEC a Campylobacter jejuni Shigella species Salmonella ty phimurium a Yersinia enterocolitica a Staphylococcus aureus Clostridium difficile ■ Vibrio cholerae 14
14 The most common cause of childhood diarrhea second only to the viral enteropathogens ◼ Escherichia coli EPEC; ETEC; EITC; EHEC; EAEC ◼ Campylobacter jejuni ◼ Shigella species ◼ Salmonella typhimurium ◼ Yersinia enterocolitica ◼ Staphylococcus aureus ◼ Clostridium difficile ◼ Vibrio cholerae Bacterial Enteropathogens
Parasites Pathogens Rare etiologic pathogen of diarrhea Cryptosporidium parvum ■ Entamoeba histolytic Giardia lamblia 15
15 Rare etiologic pathogen of diarrhea ◼ Cryptosporidium parvum ◼ Entamoeba histolytic ◼ Giardia lamblia Parasites Pathogens