Introduction and aim of the work
Review of literature
Definition of diarrhea
Normal microflora of gastrointestinal tract
Pathophysiological effects of microflora
Changes in the gastrointestinal ecology of children with PCM
Alteration of microflora with diarrhea
the vira instesinal flora
Aetiological classification of diarrhea
clinicoepidemiological and laboratory aspects of common pathogenic organisms causing diarrhea
Miscellaneous conditions associated with diarrhea
Material and methods
Results
Discussion
Summary and conclusions
References
Arabic summary
الفهرس 
