الفهرس 
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Abstract
800 meat products collected randomly from Port-Said markets for E. coli
isolation that was (43%). (54%) pastirma, (68%) minced meat, (11%)
frankfurter, (57%) burger, (59%) sausage, (21%) luncheon, (60%) raw meat,
and (14%) salami samples contained E. coli. Serotypes were (O25, O26,
O55, O63, O78, O86, O111, O112, O114, O119, O124, O125, O1 26, O136,
O142, O157, O158, and un-typed). E. coli isolates were sensitive to
Imipenem, Chloramphenicol, Nalidixic acid, and Ofloxacin. PCR
demonstrated that serotypes were positive for (phoA) and (tsh) while
negative for (stx1) and (Vt2e) virulence genes. Three serotypes carried
(eaeA) and only O157 carried (stx2) and (hly).