RESUMEN
Latent tuberculosis was studied in a research laboratory. A prevalence of positive tuberculin skin test results (> 15mm) of 20 percent was found and the main predictors were place of birth in a foreign country with high prevalence of tuberculosis and a history of contact with patients with untreated active tuberculosis.
A tuberculose latente foi estudada em um laboratório de investigação. Foi encontrada uma prevalência de 20 por cento de resultados positivos para o teste cutâneo de tuberculina (> 15mm) e os principais fatores preditores foram ser natural de um país estrangeiro com alta prevalência de tuberculose e ter uma história de contato com doentes com tuberculose ativa não tratada.
Asunto(s)
Adulto , Femenino , Humanos , Masculino , Persona de Mediana Edad , Adulto Joven , Personal de Laboratorio/estadística & datos numéricos , Mycobacterium tuberculosis/aislamiento & purificación , Tuberculosis Pulmonar/epidemiología , Personal Profesional Extranjero , Transmisión de Enfermedad Infecciosa de Paciente a Profesional , Prevalencia , Factores de Riesgo , Prueba de Tuberculina , Tuberculosis Pulmonar/diagnóstico , Tuberculosis Pulmonar/transmisión , Adulto JovenRESUMEN
Immunity to intracellular bacteria including Mycobacterium tuberculosis. Mycobacterium leprae, and Listeria monocytogenes depends on specific T cells. Evidence to be described suggests that CD4 (alpha/beta)T cells which interact with each other and with macrophages contribute to acquired resistence against as well as pathogenesis of intracellular bacterial infections