Mycobacterium tuberculosis Beijing family: Analysis of the epidemiological and clinical factors associated with an emerging lineage in the urban area of Milan.

Highlights: [•] The Beijing family of M. tuberculosis is an emerging lineage in the area of Milan. [•] Beijing strains affect mainly young foreign-born patients. [•] Beijing strains are associated with MDR, but not with HIV infection. [•] Constant prevalence over time of the founder Beijing sublineages. [Copyright &y& Elsevier]