1887

Abstract

Fifty-one consecutive isolates of , collected during a 2-year period in the north-east of Italy, were subjected to IS-RFLP analysis to detect the presence of clusters and assigned to one of the three genotypic groups delineated by single nucleotide polymorphisms in the genes and . All the isolates collected from the local population belonged to group 2 or 3, while group 1 isolates were found only in specimens collected from African immigrants. Clustered cases of tuberculosis, which are likely to be related to recently transmitted infection, were found to be significantly associated with group 2. In the local situation, strains belonging to this group may therefore present a higher risk of transmission.

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2004-02-01
2019-12-13
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