Occurrence of listeriae and survival of listeria monocytogenes in fish in Sharkia governorate

One hundred and eighty of fish samples were collected from different localities and fish markers at Sharkia governorate included 120 fresh fish samples 15 of each (Tilapia nilotica; Calarias lazera, Synodontis schall; Bagrus bayad; Schilbe mystus; Mugilcephalus, Carb, and Shrimp), and 45 frozen fish samples in addition to 15 smoked fish samples. Listeria species could be recovered from 14 samples out of 180 (7.78%), in fresh fish samples 3 out of 129 (2.5%), frozen fish samples 7 out of 45 ( 15.56%) and smoked fish samples 4 out of 15(26.67%) L. monocytogenes could be isolated from fresh samples (Calarias lazera) 2 out of 120 (1.67%), frezon fish samples 5 out of 45 examined (11.11%) and finally from 3 smoked fish samples out of 15 (20%). The count of L. monocytogenes isolated from 3 smoked fish samples ranged from 1.1X102 to 2.2X102. CFU/g. The public health of L. monocytogenes in sea foods under Egyptian condition was studied.