[Difficulties in the realization and implementation of a national survey on the Annual Risk of Tuberculosis Infection in Madagascar]. / Difficultés dans la réalisation et l'exploitation d'une enquête nationale sur le Risque Annual d'Infection tuberculeuse à Madagascar.

ABSTRACT

The authors describe on the basis of their own experience, the difficulties that may arise during the achievement of a nationwide survey of the Annual Risk of Tubercular Infection and the analysis of the results. They stress the need of a close methodology at all stages of the survey, from conception to analysis, in order to get reliable and comparative results.