Abstract:
:Mycobacterium tuberculosis strains of the Beijing lineage are globally distributed and are associated with the massive spread of multidrug-resistant (MDR) tuberculosis in Eurasia. Here we reconstructed the biogeographical structure and evolutionary history of this lineage by genetic analysis of 4,987 isolates from 99 countries and whole-genome sequencing of 110 representative isolates. We show that this lineage initially originated in the Far East, from where it radiated worldwide in several waves. We detected successive increases in population size for this pathogen over the last 200 years, practically coinciding with the Industrial Revolution, the First World War and HIV epidemics. Two MDR clones of this lineage started to spread throughout central Asia and Russia concomitantly with the collapse of the public health system in the former Soviet Union. Mutations identified in genes putatively under positive selection and associated with virulence might have favored the expansion of the most successful branches of the lineage.
journal_name
Nat Genetjournal_title
Nature geneticsauthors
Merker M,Blin C,Mona S,Duforet-Frebourg N,Lecher S,Willery E,Blum MG,Rüsch-Gerdes S,Mokrousov I,Aleksic E,Allix-Béguec C,Antierens A,Augustynowicz-Kopeć E,Ballif M,Barletta F,Beck HP,Barry CE 3rd,Bonnet M,Borroni E,doi
10.1038/ng.3195subject
Has Abstractpub_date
2015-03-01 00:00:00pages
242-9issue
3eissn
1061-4036issn
1546-1718pii
ng.3195journal_volume
47pub_type
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