Identification of new IS711 insertion sites in Brucella abortus field isolates.

ABSTRACT:

Background

Brucellosis is a zoonosis caused by Brucella spp., a group of highly homogeneous bacteria. The insertion sequence IS711 is characteristic of these bacteria, and occurs in variable numbers and positions, but always constant within a given species. This species-associated polymorphism is used in molecular typing and identification. Field isolates of B. abortus, the most common species infecting cattle, typically carry seven IS711 copies (one truncated). Thus far, IS711 transposition has only been shown in vitro and only for B. ovis and B. pinnipedialis, two species carrying a high number of IS711 copies, but never in other Brucella species, neither in vitro nor in field strains.

Results

We found several B. abortus strains isolated from milk and aborted fetuses that

SUBMITTER: Mancilla M 

PROVIDER: S-EPMC3163539 | biostudies-literature | 2011 Aug

REPOSITORIES: biostudies-literature