Whole-Genome Sequencing for Tracing the Genetic Diversity of Brucella abortus and Brucella melitensis Isolated from Livestock in Egypt

Pathogens

Eman Shawkat Ramadan¹  Hossam E. M. Sayour²  Waleed S. Shell³  Ashraf Hendam⁴  Ashraf E. Sayour⁵  Rania I. Ismail⁵  Uwe Roesler⁶  Hosny El-Adawy⁷  Aman Ullah Khan⁷  Falk Melzer⁷  Jörg Linde⁷  Mandy C. Elschner⁷  Heinrich Neubauer⁷  Mostafa Abdel-Glil⁷  Lubna F. Farahat⁸  Shereen Aziz Mohamed⁸  Sherif A. G. E. El-Soally⁹ 

[1] Animal Reproduction Research Institute, Agricultural Research Center, Al Ahram, Giza 12556, Egypt;Biomedical Chemistry Unit, Department of Chemistry and Nutritional Deficiency Disorders, Animal Health Research Institute, Agricultural Research Center, Dokki, Giza 12618, Egypt;Central Laboratory for Evaluation of Veterinary Biologics, Agricultural Research Center, Abbassia, Cairo 11517, Egypt;Climate Change Information Center, Renewable Energy and Expert Systems (CCICREES), Agricultural Research Center, 9 Algamaa Street, Giza 12619, Egypt;Department of Brucellosis, Animal Health Research Institute, Agricultural Research Center, Dokki, Giza 12618, Egypt;Institute for Animal Hygiene and Environmental Health, Free University of Berlin, 14163 Berlin, Germany;Institute of Bacterial Infections and Zoonoses, Friedrich-Loeffler-Institut, 07743 Jena, Germany;Veterinary Serum and Vaccine Research Institute, Agricultural Research Center, Abbassia, Cairo 11517, Egypt;Veterinary Service Department, Armed Forces Logistics Authority, Egyptian Armed Forces, Nasr City, Cairo 11765, Egypt;

关键词: Brucella;    WGS;    SNP;    genotyping;    epidemiological map;    Egypt;   

DOI  :  10.3390/pathogens10060759

来源: DOAJ

【 摘 要 】

Brucellosis is a highly contagious zoonosis that occurs worldwide. Whole-genome sequencing (WGS) has become a widely accepted molecular typing method for outbreak tracing and genomic epidemiology of brucellosis. Twenty-nine Brucella spp. (eight B. abortus biovar 1 and 21 B. melitensis biovar 3) were isolated from lymph nodes, milk, and fetal abomasal contents of infected cattle, buffaloes, sheep, and goats originating from nine districts in Egypt. The isolates were identified by microbiological methods and matrix-assisted laser desorption ionization time-of-flight mass spectrometry (MALDI-TOF MS). Differentiation and genotyping were confirmed using multiplex PCR. Illumina MiSeq^® was used to sequence the 29 Brucella isolates. Using MLST typing, ST11 and ST1 were identified among B. melitensis and B. abortus, respectively. Brucella abortus and B. melitensis isolates were divided into two main clusters (clusters 1 and 2) containing two and nine distinct genotypes by core-genome SNP analysis, respectively. The genotypes were irregularly distributed over time and space in the study area. Both Egyptian B. abortus and B. melitensis isolates proved to be genomically unique upon comparison with publicly available sequencing from strains of neighboring Mediterranean, African, and Asian countries. The antimicrobial resistance mechanism caused by mutations in rpoB, gyrA, and gyrB genes associated with rifampicin and ciprofloxacin resistance were identified. To the best of our knowledge, this is the first study investigating the epidemiology of Brucella isolates from livestock belonging to different localities in Egypt based on whole genome analysis.

【 授权许可】

Unknown