Molecular epidemiology and antibiotic susceptibility of livestock Brucella melitensis isolates from Naryn Oblast, Kyrgyzstan

PLoS Negl Trop Dis. 2013;7(2):e2047. doi: 10.1371/journal.pntd.0002047. Epub 2013 Feb 28.

Abstract

The incidence of human brucellosis in Kyrgyzstan has been increasing in the last years and was identified as a priority disease needing most urgent control measures in the livestock population. The latest species identification of Brucella isolates in Kyrgyzstan was carried out in the 1960s and investigated the circulation of Brucella abortus, B. melitensis, B. ovis, and B. suis. However, supporting data and documentation of that experience are lacking. Therefore, typing of Brucella spp. and identification of the most important host species are necessary for the understanding of the main transmission routes and to adopt an effective brucellosis control policy in Kyrgyzstan. Overall, 17 B. melitensis strains from aborted fetuses of sheep and cattle isolated in the province of Naryn were studied. All strains were susceptible to trimethoprim-sulfamethoxazole, gentamicin, rifampin, ofloxacin, streptomycin, doxycycline, and ciprofloxacin. Multilocus variable number tandem repeat analysis showed low genetic diversity. Kyrgyz strains seem to be genetically associated with the Eastern Mediterranean group of the Brucella global phylogeny. We identified and confirmed transmission of B. melitensis to cattle and a close genetic relationship between B. melitensis strains isolated from sheep sharing the same pasture.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Anti-Bacterial Agents / pharmacology*
  • Brucella melitensis / classification*
  • Brucella melitensis / drug effects*
  • Brucella melitensis / genetics
  • Brucella melitensis / isolation & purification
  • Brucellosis / epidemiology
  • Brucellosis / microbiology
  • Brucellosis / veterinary*
  • Cattle
  • Cattle Diseases / epidemiology*
  • Cattle Diseases / microbiology
  • Genetic Variation*
  • Genotype
  • Kyrgyzstan / epidemiology
  • Microbial Sensitivity Tests
  • Minisatellite Repeats
  • Molecular Epidemiology
  • Molecular Typing
  • Sheep
  • Sheep Diseases / epidemiology*
  • Sheep Diseases / microbiology

Substances

  • Anti-Bacterial Agents

Grants and funding

Funding was provided by the Swiss Development Cooperation through the National Centers for Competence in Research North-South, the Swiss Federal Office for Civil Protection, and the Swiss Federal Veterinary Office. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.