Leprosy exposure, infection and disease: a 25-year surveillance study of leprosy patient contacts
Mem. Inst. Oswaldo Cruz
; 107(8): 1054-1059, Dec. 2012. graf, tab
Artículo
en Inglés
| LILACS
| ID: lil-660655
Biblioteca responsable:
BR1.1
ABSTRACT
Contact surveillance is a valuable strategy for controlling leprosy. A dynamic cohort study of leprosy contacts was initiated in 1987 at Oswaldo Cruz Foundation. The objective of this work was to review the data on the major risk factors leading up to the infectious stage of the disease, estimate incidence rates of leprosy in the cohort and characterise the risk factors for the disease among the contacts under surveillance. The incidence rate of leprosy among contacts of leprosy patients was estimated at 0.01694 cases per person-year in the first five years of follow-up. The following factors were associated with acquiring the disease (i) not receiving the BCG vaccine, (ii) a negative Mitsuda reaction and (iii) contact with a patient with a multibacillary clinical form of leprosy. The contacts of index patients who had high bacilloscopic index scores > 1 were at especially high risk of infection. The following factors were associated with infection, which was defined as a seropositive reaction for anti-phenolic glicolipid-1 IgM (i) young age (< 20 years), (ii) a low measured Mitsuda reaction (< 5 mm) and (iii) contact with an index patient who had a high bacilloscopic index. BCG vaccination and re-vaccination were shown to be protective among household contacts. The main conclusions of this study indicate an urgent need for additional leprosy control strategies in areas with a high incidence of the disease.
Texto completo:
Disponible
Colección:
Bases de datos internacionales
Contexto en salud:
Agenda de Salud Sostenible para las Américas
/
ODS3 - Salud y Bienestar
/
Enfermedades Desatendidas
/
ODS3 - Meta 3.3 Poner fin a las enfermedades desatendidas y detener enfermedades transmisibles
Problema de salud:
Objetivo 10: Enfermedades transmisibles
/
Meta 3.3: Poner fin a las enfermedades desatendidas y detener enfermedades transmisibles
/
Lepra
/
Enfermedades Desatendidas
/
Tuberculosis
/
Tuberculosis
Base de datos:
LILACS
Asunto principal:
Trazado de Contacto
/
Lepra
Tipo de estudio:
Estudio de etiología
/
Estudio de incidencia
/
Estudio observacional
/
Estudio pronóstico
/
Factores de riesgo
/
Estudio de tamizaje
Límite:
Humanos
Idioma:
Inglés
Revista:
Mem. Inst. Oswaldo Cruz
Asunto de la revista:
Medicina Tropical
/
Parasitología
Año:
2012
Tipo del documento:
Artículo
País de afiliación:
Brasil
Institución/País de afiliación:
Fiocruz/BR