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Escherichia coli that Produces Shiga Toxins: Prevalence and Possible Risk in Soft Cheese

Article

Last updated: 01 Jan 2025

Subjects

-

Tags

Veterinary Parasitology & Microbiology

Abstract

Though soft cheese is vital nutrition source for many people, yet if made from unpasteurized milk, it  poses a concern to public health e.g Escherichia coli that can produce Shiga toxins (STEC). In this study totally, 150 soft cheese (50 Karish, 50 Tallaga, 40 processed and 10 feta cheeses) samples were collected indiscriminately from several areas in El-Gharbia Governorate and tested for STEC. By culturing on EMB, E.coli were detected in (18/50) 36%, (12/50) 24%, (1/40) 2.5% and none (0/10) of the examined samples, respectively. One hundred suspected isolates were examined biochemically; thirteen identified isolates were serotyped: of them 11 strains were confirmed as pathogenic STEC serotypes (O78:K80, O44:K74, O114:K90, O124:K63, O103:K- and O145:K-). Seven strains that obtained from Karish and Tallaga cheese were tested for virulence factors as Shiga toxins (stx1 and stx2) and intimin (eaeA) genes using polymerase chain reaction (PCR). Three out of the seven (42.9%) strains have stx1 and eaeA genes, 1/7 (14.3%) carry stx2 and eaeA genes, 1/7 (14.3%) carry stx1, stx2 and eaeA genes while 2/7 (28.6%) carry only eaeA gene. STEC strains that have shiga toxin with adherence genes are considered to pose high risk of illness that necessitates strict hygienic measures enforcement during soft cheese production.

DOI

10.21608/ejvs.2024.276598.1913

Keywords

E. coli, Shiga toxins, Virulence genes, Soft cheese

Authors

First Name

Azza

Last Name

Sobeih

MiddleName

Mohamed Kamel

Affiliation

Department of Food Control, Faculty of Veterinary Medicine, Kafr Elsheikh University

Email

dr.azzasobeih@yahoo.com

City

Kafr Elsheikh

Orcid

0000-0003-0291-8651

First Name

Hend

Last Name

Elbarbary

MiddleName

Ahmed

Affiliation

Department of Food Hygiene and Control, Faculty of Veterinary Medicine, Benha University

Email

hendbarbary2002@yahoo.com

City

-

Orcid

0000-0002-5895-8364

First Name

Seham

Last Name

Elattar

MiddleName

Ahmed Mohamed

Affiliation

Department of Food Control, Faculty of Veterinary Medicine, Kafr Elsheikh University

Email

sehamsosoah@gmail.com

City

-

Orcid

-

Related Issue

-2

Receive Date

2024-03-14

Publish Date

2024-05-28

Page Start

1

Page End

8

Print ISSN

1110-0222

Online ISSN

2357-089X

Link

https://ejvs.journals.ekb.eg/article_356778.html

Detail API

https://ejvs.journals.ekb.eg/service?article_code=356778

Order

26

Type

Conference

Type Code

1,080

Publication Type

Journal

Publication Title

Egyptian Journal of Veterinary Sciences

Publication Link

https://ejvs.journals.ekb.eg/

MainTitle

Escherichia coli that Produces Shiga Toxins: Prevalence and Possible Risk in Soft Cheese

Details

Type

Article

Created At

23 Dec 2024