425530

The Prevalence and Molecular Characterization of Some Virulence Genes in S. agalactiae and S. dysgalactiae Isolates from Milk, Milk Products, and Humans in Sharkia Governorate, E

Article

Last updated: 04 May 2025

Subjects

-

Tags

Animal Health, Nutrition and Food Control (Veterinary Public Health, Animal Wealth Development, Animal Nutrition, Zoonoses, Food Control)

Abstract

In this study, Streptococcus species were identified in 68.75% of milk samples, 69.33% of kariesh cheese, 80% of hand swabs, 77.5% of pharyngeal swabs, and 45% of vaginal swabs. From milk samples, 37 Streptococcus species isolates were identified: S. agalactiae (37.83%), S. dysgalactiae (21.62%), S. uberis (13.51%), S. pyogenes (8.11%), and S. pneumoniae (2.7%). Analysis of hand swabs revealed S. agalactiae (40%), S. dysgalactiae (10%), S. pneumoniae (10%), and both S. pyogenes and S. uberis (15% each). For pharyngeal swabs, 19 isolates included S. agalactiae (15.79%), S. dysgalactiae (5.26%), S. pneumoniae (26.32%), and S. pyogenes (36.84%). Thirty- four Streptococcus species isolates were molecularly confirmed as: S. agalactiae (n = 20), S. dysgalactiae (n =11) and S. pyogenes (n = 3). Results indicated that virulence genes scpB, rib, and lmb were present in all S. agalactiae isolates (100%) from milk and cheese. However, scpB and rib were detected in 66.7% of S. agalactiae human isolates, and lmb was found in all isolates (100%). The scpB gene was identified in all S. dysgalactiae human isolates (100%) but was not detected in S. dysgalactiae isolates from milk and cheese. The rib gene was not found in S. dysgalactiae milk isolates but was detected in all S. dysgalactiae from cheese and human (100%). The lmb gene was found in all milk and cheese S. dysgalactiae isolates, but only detected in 50% of human isolates. In conclusion, S. agalactiae and S. dysgalactiae were frequently detected in dairy products and human swabs in Sharkia Governorate, Egypt, indicating potential zoonotic transmission. The virulence genes scpB, rib, and lmb were more common in S. agalactiae from milk and cheese than in those from humans, while these genes were more prevalent in S. dysgalactiae from humans than from dairy sources.

DOI

10.21608/zvjz.2024.333200.1266

Keywords

Streptococcus spp, prevalence, zoonotic transmission, Virulotyping

Authors

First Name

Esraa

Last Name

Azab

MiddleName

Mohamed Elsayed

Affiliation

Department of Zoonoses, Faculty of Veterinary Medicine, Zagazig university, Zagazig 44511, Egypt

Email

esraaazab833@gmail.com

City

-

Orcid

-

First Name

Rehab

Last Name

Mohamed

MiddleName

E.

Affiliation

Department of Zoonoses, Faculty of Veterinary Medicine, Zagazig university, Zagazig 44511, Egypt

Email

elaqsa_2025@yahoo.com

City

-

Orcid

-

First Name

Rasha

Last Name

Gharieb

MiddleName

M. A.

Affiliation

Department of Zoonoses, Faculty of Veterinary Medicine, Zagazig university, Zagazig 44511, Egypt

Email

ghariebrasha@gmail.com

City

-

Orcid

-

First Name

Azza

Last Name

Eldemerdash

MiddleName

salah

Affiliation

Laboratory of Biotechnology, Department of Microbiology, Agricultural Research Center (ARC), Animal Health Research Institute (AHRI), Zagazig 44516, Egypt.

Email

dr.azzasalah@yahoo.com

City

zagazig

Orcid

-

First Name

Maysa

Last Name

Awadallah

MiddleName

A.I.

Affiliation

Department of Zoonoses, Faculty of Veterinary Medicine, Zagazig university, Zagazig 44511, Egypt

Email

maawadallah1974@gmail.com

City

Zagazig

Orcid

-

Volume

53

Article Issue

1

Related Issue

55475

Issue Date

2025-03-01

Receive Date

2024-11-06

Publish Date

2025-03-01

Page Start

1

Page End

21

Print ISSN

1110-1458

Online ISSN

2357-075X

Link

https://zvjz.journals.ekb.eg/article_425530.html

Detail API

http://journals.ekb.eg?_action=service&article_code=425530

Order

425,530

Type

Original Article

Type Code

601

Publication Type

Journal

Publication Title

Zagazig Veterinary Journal

Publication Link

https://zvjz.journals.ekb.eg/

MainTitle

The Prevalence and Molecular Characterization of Some Virulence Genes in S. agalactiae and S. dysgalactiae Isolates from Milk, Milk Products, and Humans in Sharkia Governorate, E

Details

Type

Article

Created At

04 May 2025