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Am J Trop Med Hyg ; 99(4): 867-874, 2018 10.
Artigo em Inglês | MEDLINE | ID: mdl-29987998

RESUMO

We used whole-genome sequencing to investigate a tuberculosis outbreak involving U.S.-born persons in the prison system and both U.S.- and foreign-born persons in the community in Florida over a 7-year period (2009-2015). Genotyping by spacer oligonucleotide typing and 24-locus mycobacterial interspersed repetitive unit-variable number tandem repeat suggested that the outbreak might be clonal in origin. However, contact tracing could not link the two populations. Through a multidisciplinary approach, we showed that the cluster involved distinct bacterial transmission networks segregated by country of birth. The source strain is of foreign origin and circulated in the local Florida community for more than 20 years before introduction into the prison system. We also identified novel transmission links involving foreign and U.S.-born cases not discovered during contact investigation. Our data highlight the potential for spread of strains originating from outside the United States into U.S. "high-risk" populations, such as prisoners, with subsequent movement back to the general community.


Assuntos
Surtos de Doenças , Genoma Bacteriano , Mycobacterium tuberculosis/genética , Prisioneiros , Tuberculose Pulmonar/epidemiologia , Adulto , Infecções Comunitárias Adquiridas , Busca de Comunicante , Emigrantes e Imigrantes , Feminino , Florida/epidemiologia , Humanos , Masculino , Pessoa de Meia-Idade , Mycobacterium tuberculosis/classificação , Mycobacterium tuberculosis/isolamento & purificação , Filogenia , Prisões , Sequências de Repetição em Tandem , Tuberculose Pulmonar/diagnóstico , Tuberculose Pulmonar/microbiologia , Tuberculose Pulmonar/transmissão , Sequenciamento Completo do Genoma
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