424910

COMPREHENSIVE ASSESSMENT OF STAPHYLOCOCCUS AUREUS CONTAMINATION IN RAW MILK: OCCURRENCE, ANTIBIOTIC RESISTANCE MECHANISMS, ENTEROTOXIN GENE MARKERS AND PUBLIC HEALTH RISKS

Article

Last updated: 11 May 2025

Subjects

-

Tags

Milk hygiene & milk product

Abstract

Staphylococcus aureus has evolved as one of the most outstanding foodborne pathogens. As a member of the ESKAPE group, it can "escape" the antimicrobial effects of biocidal agents, posing a global public health threat. Hence, the current research was designed to investigate the presence of Staph. aureus isolated from raw milk samples and evaluated their antibiotic resistance and enterotoxin genes. Fifty raw milk samples were randomly purchased from dairy farms, small holders, dairy shops and street vendors located in Cairo, Giza and Qalyubia governorates, Egypt to highlight the contamination at farm level and after distribution. Staph. aureus isolates were identified using biochemical and molecular methods. Antibiotic resistance was determined against 10 antibiotics, using the phenotypic disc diffusion assay and genotypically. Furthermore, 2 staphylococcal enterotoxin genes (SEA and SEC) were screened. The obtained results indicated that the mean counts of Staph. aureus was 1.9±0.2, 2.2±0.3, 1.6±0.3 and 2.9±0.2 log10 cfu/ml, among the raw milk samples from dairy farms, small holders, dairy shops and street vendors, respectively. Additionally, Multi-drug resistance (MDR) was exhibited in 50% of the isolates, and 78.95% were methicillin-resistant Staph. aureus (MRSA). Moreover, high resistance to penicillin (62.5%), cefoxitin (59.38%) and tetracycline (56.25%) was observed. A percentage of 28.13% of Staph. aureus strains were having enterotoxin genes, out of them 21.9% and 6.25% harbored SEA and SEC genes, respectively. Concurrently, the obtained findings advocate for the implementation of surveillance programs to ensure effective preventive measures starting at the farm level.

DOI

10.21608/avmj.2025.338696.1488

Keywords

Staph. aureus, antibiotics resistance, Enterotoxins, farms, MRSA

Authors

First Name

PASSANT

Last Name

ELHENAWY

MiddleName

A.

Affiliation

Department of Food Hygiene and Control, Faculty of Veterinary Medicine, Cairo University, Giza, 12211, Egypt

Email

passantadel259@gmail.com

City

Cairo, Egypt

Orcid

-

First Name

ADEL

Last Name

SAUDI

MiddleName

M.

Affiliation

Department of Food Hygiene and Control, Faculty of Veterinary Medicine, Cairo University, Giza, 12211, Egypt

Email

adelsaudi2015@yahoo.com

City

Giza

Orcid

-

First Name

SAMAH

Last Name

DARWISH

MiddleName

F.

Affiliation

Biotechnology Research Unit, Animal Reproduction Research Institute (ARRI), Agricultural Research Center (ARC), Giza, 65221, Egypt

Email

samahtarek2005@yahoo.com

City

Giza

Orcid

0000000274134146

First Name

TAREK

Last Name

SOLIMAN

MiddleName

N.

Affiliation

Dairy Department, Food Industries and Nutrition Research Institute, National Research Center, El-Buhouth St., Dokki, Cairo 12622, Egypt

Email

tariknour.nrc@gmail.com

City

Giza

Orcid

-

First Name

ZEINAB

Last Name

ALI

MiddleName

I.

Affiliation

Department of Food Hygiene and Control, Faculty of Veterinary Medicine, Cairo University, Giza, 12211, Egypt

Email

dr.zeinab2010@gmail.com

City

الجيزة

Orcid

-

Volume

71

Article Issue

185

Related Issue

55112

Issue Date

2025-04-01

Receive Date

2024-12-10

Publish Date

2025-04-01

Page Start

447

Page End

462

Print ISSN

1012-5973

Online ISSN

2314-5226

Link

https://avmj.journals.ekb.eg/article_424910.html

Detail API

http://journals.ekb.eg?_action=service&article_code=424910

Order

424,910

Type

Research article

Type Code

1,840

Publication Type

Journal

Publication Title

Assiut Veterinary Medical Journal

Publication Link

https://avmj.journals.ekb.eg/

MainTitle

COMPREHENSIVE ASSESSMENT OF STAPHYLOCOCCUS AUREUS CONTAMINATION IN RAW MILK: OCCURRENCE, ANTIBIOTIC RESISTANCE MECHANISMS, ENTEROTOXIN GENE MARKERS AND PUBLIC HEALTH RISKS

Details

Type

Article

Created At

04 May 2025