In vitro the effect of intestinal normal flora on some pathogenic bacteria

The effect of two types of intestinal bacterial normal floral (E.coli and klebsiella) were tested against 50 bacterial isolates collected from different infection of patients and hospital setting ,using inverted disk technique and wells on nutrient agar, the result revealed that the normal flora were affected on 30 bacterial isolates from total 50 isolates .The effect of normal flora were appear on 8 isolates from burns and wounds,5 isolates from ear infections, 9 isolates from gastrointestinal infections (diarrhea), 8 isolates from hospitals delivery rooms E.coli affect on 2 isolate for each of klebsiella and pseudomonas isolated from gastrointestinal infections (diarrhea). In contrast, klebsiella was affect on 9 isolates of pseudomonas aerogenosa , 6 isolates of klebsiella and 3,3,2,2,1 isolates of staphylococcus aereus , serratia ,Acinetobacter ,Enterobacter ,E.coli, respectively, isolated from ear infections ,delivery rooms ,gastrointestinal infections, burns and wounds.