Focusing tuberculosis contact tracing by smear grading of index cases.
Several studies have confirmed that the contacts of sputum-smear-positive patients are a high risk group.
We made a prospective survey to investigate the contacts of infectious cases of pulmonary tuberculosis in order to evaluate whether different grades of sputum-smear positivity have any consequence in the emergence of new cases.
The number of contacts reported by 134 index cases was 609.
These included 136 (22%) who had been in close contact to the index case, 69 of them to patients heavily positive by sputum smear.
Tracing of 609 contacts over 2 yr revealed four (0.7%) new cases of active tuberculosis.
All of them were close contacts, and, moreover, all four (5.8%) belonged to the group of 69 whose index case had a heavily positive sputum smear.
Mots-clés Pascal : Appareil respiratoire pathologie, Infection, Bactériose, Poumon, Epidémiologie, Exploration, Homme, Exploration microbiologique, Tuberculose, Mycobactériose, Expectoration
Mots-clés Pascal anglais : Respiratory disease, Infection, Bacteriosis, Lung, Epidemiology, Exploration, Human, Microbiological investigation, Tuberculosis, Mycobacterial infection, Sputum
Notice produite par :
Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 93-0595713
Code Inist : 002B05B02E. Création : 199406.