Genetic Characterization of Brucella Species in Some Dairy Farms of the Nile Delta, Egypt | ||||
| Egyptian Journal of Veterinary Sciences | ||||
| Articles in Press, Accepted Manuscript, Available Online from 25 August 2025 PDF (789.97 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/ejvs.2025.391916.2894 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
Rana Elsaid ElBayoume  1; Mohamed El‑Diasty2; Maha Al-Ashmawy3; Mohamed El-Sherbini4; adel abdelkhalek5
| ||||
| 1Food Hygiene and Control Department, faculty of veterinary medicine, Mansoura university, Mansoura, Egypt | ||||
| 2Cheif Researcher of Bacteriology and Technical manager of AHRI Mansoura Provincial Lab. | ||||
| 3Professor of Milk Hygiene Faculty of Veterinary Medicine, Mansoura University Dean of Faculty of Veterinary Medicine, Mansoura University | ||||
| 4Professor of Milk Hygiene Food Hygiene, Safety and Technology Department, faculty of Veterinary Medicine, Mansoura University | ||||
| 5Faculty of Veterinary Medicine, Badr University in Cairo (BUC), Cairo, Badr City 11829, Egypt | ||||
| Abstract | ||||
| Brucellosis, as a highly zoonotic disease, has been endemic in Egypt's Nile Delta since 1939 and affects cattle, buffaloes, sheep, and goats, with severe economic losses, and continues to threaten livestock-based communities. This research investigated the seroprevalence of brucellosis in the organized dairy farms in different governorates of Egypt's Nile Delta. Milk Ring Test (MRT) was a screening test for the bulk milk tank, positive farms were investigated serologically using Rose Bengal Test (RBT) and Buffered Acidified Plate Antigen Test (BAPAT). Milk Ring Test (MRT) screening diagnosed brucellosis on 21 of 65 farms (32.31%), the positive farms being dispersed as follows: 40% in Damietta, 25% in Sharqia, and 30% in Behira. Individual animal serological tests confirmed infection levels of 10.7% in Damietta, 22.9% in Sharqia, and 16.4% in Behira with both RBT and BAPBT. Brucella organisms were cultured from 10 farms (47.6% of the seropositive farms). Molecular typing by Abortus, Melitensis, Ovis and Suis Polymerase Chain Reaction (AMOS-PCR) confirmed nine isolates as Brucella melitensis biovar 3 and one as Brucella abortus biovar 1. These findings highlight the diagnostic challenge of brucellosis in endemic settings, where there is no single definitive test. The prevalence of B. melitensis biovar 3 in Egypt's Delta region is fostered by mixed farming and poor hygiene and demands concerted control efforts using serological and molecular diagnostics, test and slaughter policies, and vaccination. Consumption of raw milk and dairy products from infected animals remains a key transmission mode, emphasizing the need for strict food safety policies to protect public health. | ||||
| Keywords | ||||
| AMOS-PCR; Brucella melitensis; Brucellosis; Dairy cattle; Seroprevalence | ||||
|
Statistics Article View: 4 PDF Download: 1 |
||||
