Spread of Mycobacterium tuberculosis in Southern Brazilian persons deprived of liberty: a molecular epidemiology study

Busatto, Caroline; Possuelo, Lia Gonçalves; Bierhals, Dienefer Venske; Oliveira, Carolina Larrosa de; Souza, Mariana Quaresma de; Fanfa, Dandara; Barreto, Érika; Schwarzbold, Pauline; Groll, Andréa von; Portugal, Isabel; Perdigão, João; Croda, Júlio; Andrews, Jason R.; Silva, Pedro Eduardo Almeida da; Ramis, Ivy Bastos

doi:10.1007/s10096-023-04546-4

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2024

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“… 40 Moreover, studies have shown that MDR-TB from PDL frequently spills over the general population, 8 , 11 as also documented in other South American countries. 41 , 42 , 43 Interestingly, it has been reported that MDR Mtbc strains from prison settings carry increased compensatory mutations that favour Mtbc transmission fitness, 8 which may explain the high rate of recent MDR-transmission linked to imprisonment. However, we did not find any compensatory mutations within our large D5 group_1 transmission cluster suggesting that the role of compensatory mutations may not be as important for the successful transmission of MDR Mtbc strains, at least in lineage 4 strains being dominant within the Callao region.…”

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confidence: 99%