PREVALENCE OF LISTERIA SPECIES IN MEAT AND MEAT PRODUCTS

Document Type : Original Article

Authors

1 Fac. Vet. Med., Moshtohour, Zagazig University, Benha branch.

2 Animal Health Research Institute, Dokki, Giza

3 Animal Health Research Institute, Zagazig branch

Abstract

Four hundred and forty samples of meat and meat products, 40 each of (fresh meat, frozen beef, raw ground beef, frozen kofta, frozen ground beef, frozen beef sausage, frozen beef burger, hotdog, frankfurter, luncheon and basterma), were collect- ed from different supermarkets and shops at Sharkia Governorate. Listeria species could be isolated from all exam- ined samples at different percentages ranged from 7.5 42.5 %, except luncheon and basterma sam- ples could not be isolated. Listeria monocytogenes could be isolated at vari- able percentage (2.5-10 %) of the examined fro zen beef, frozen kofta, frozen ground beef, frozen Beef burger and frozen sausage. From the nine isolates of Listeria monocytogenes isolated from examined samples, seven strains were belonged to L. monocytogenes type 1 and two strains were belonged to L. monocytogenes type 4. The highest count of L. monocytogenes recorded as 3X104 /g in frozen beef sausage sample. The public health hazard as well as suggestive meas- ures to reduce human Listeriosis has been discussed.

Main Subjects