الفهرس 
INTRODUCTIONOnly 14 pages are availabe for public view
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Abstract
A total of 150 randomly fresh chicken meat samples (30 of each including breast, thigh and giblets (heart, liver and gizzard) were collected from different chicken shops of different sanitation levels at Zagazig city- Sharkia province, well identified, packed in a sterile plastic bags then labeled and immediately transferred under sanitary precaution to the laboratory, where subjected to microbiological examination for isolation and identification of E. coli
The results revealed that, out of 150 samples, 48 samples were bacteriologically E. coli positive (32%)and 48 samples were subjected to serological identification that revealed that 20 samples were EPEC. Out of these twenty EPEC isolates, ten isolates were admitted for PCR examination.
According to the current study, E. coli was isolated at percentage of 50%, 43.33%, 30%, 20% and 13.33% in breast, liver, gizzard, thigh and heart respectively.
Twenty strains of E. coli were serologically identified as EPEC with a percentage 41.66 %. The percentage of EPEC O78 , EPEC O2:H6 , EPEC O1 :H7 , EPEC O153: H11 and EPEC O153: H2 were
18.75%, 4.16%, 10.41%, 4.16% and 4.16% respectively.
EPEC O78 were isolated from breast, thigh, heart and gizzard with an percentage 6.66%, 33.33%, 23.07% and 20% respectively. EPEC O2: H6 were isolated from breast and Thigh at percentage of 6.66% and 16.66% respectively. EPEC O1:H7 were isolated from
breast with percentage 13.33% and heart with percentage 25%.
EPEC O153:H11 was isolated from 20 % of the examined gizzerd samples. Meanwhile, EPEC O153:H2 was isolated from thigh and breast samples with percentage of 16.66% and 6.66 % respectively.