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Int J Tuberc Lung Dis ; 13(2): 190-5, 2009 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-19146746

RESUMO

BACKGROUND: Treatment of latent tuberculosis (TB) infection (LTBI) in Brazil is recommended only in the case of contacts of pulmonary smear-positive TB patients agedor=10 mm and no previous bacille Calmette-Guérin (BCG) vaccination or with a TST>or=15 mm regardless of previous BCG vaccination. OBJECTIVE: To evaluate the 2-year incidence and predictors of TB among contacts who did not meet the Brazilian criteria for LTBI treatment. DESIGN: Retrospective cohort study. Contacts aged between 12 and 15 years and those aged>or=15 years who did not meet the Brazilian criteria for LTBI treatment were enrolled in the study. RESULTS: TB incidence was 3.2% (22/667), with an estimated TB rate of 1649 per 100000 population. Risk of TB was greater among the 349 contacts with TST>or=5 mm (5.4%) compared to the 318 contacts with TST<5 mm (0.9%; RR 6.04, 95%CI 1.7-20.6). CONCLUSION: The high incidence of TB among contacts who did not meet the Brazilian criteria for LTBI treatment strongly suggests that these criteria should be reviewed. Furthermore, even among BCG-vaccinated contacts, TST induration>or=5 mm was the only variable that predicted the development of TB disease within 2years.


Assuntos
Portador Sadio/epidemiologia , Transmissão de Doença Infecciosa/estatística & dados numéricos , Tuberculose Pulmonar/epidemiologia , Tuberculose Pulmonar/transmissão , Adolescente , Adulto , Antituberculosos/uso terapêutico , Brasil , Portador Sadio/diagnóstico , Estudos de Coortes , Transmissão de Doença Infecciosa/prevenção & controle , Feminino , Humanos , Incidência , Isoniazida/uso terapêutico , Masculino , Pessoa de Meia-Idade , Guias de Prática Clínica como Assunto , Valor Preditivo dos Testes , Pirazinamida/uso terapêutico , Estudos Retrospectivos , Rifampina/uso terapêutico , Risco , Teste Tuberculínico , Tuberculose Pulmonar/diagnóstico , Tuberculose Pulmonar/tratamento farmacológico , Adulto Jovem
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