European 1: a globally important clonal complex of Mycobacterium bovis.

We have identified a globally important clonal complex of Mycobacterium bovis by deletion analysis of over one thousand strains from over 30 countries. We initially show that over 99% of the strains of M. bovis, the cause of bovine tuberculosis, isolated from cattle in the Republic of Ireland and the UK are closely related and are members of a single clonal complex marked by the deletion of chromosomal region RDEu1 and we named this clonal complex European 1 (Eu1).

Comparison of three decontamination methods for Mycobacterium bovis isolation.

SIXTY SAMPLES OF TISSUE FRAGMENTS WITH LESIONS SUGGESTIVE OF TUBERCULOSIS FROM BOVINE ABATTOIRS, KEPT IN SATURATED SOLUTION OF SODIUM BORATE, WERE SUBJECTED TO FOUR TREATMENTS: 4% NaOH (Petroff Method), 12 % H2SO4 and 1.5% HPC (1-Hexadecylpyridinium Chloride) decontamination, and physiological saline solution (control). The HPC method showed the lowest contamination rate (3%) when compared to control (88%, p<0.

Identification of an IS6110 insertion site in plcD, the unique phospholipase C gene of Mycobacterium bovis.

The IS6110 repetitive element is present in multiple copies in most Mycobacterium tuberculosis complex bacteria, except for Mycobacterium bovis strains, which usually contain a single copy of IS6110 located on a 1.9 kb PvuII fragment of the direct repeat region. IS6110 transposition can disrupt coding regions and is a major force of genomic variation.