[Children bronchiolitis: multicentric study in Tunis].

This study is made in the general framework of the basic health cares program set up by Tunis regional service to fight child serious respiratory infections. It has an objective to measure bronchiolitis winter frequency for patients aged from 1 to 36 months, serious cases frequency, changing profile, the therapeutic behavior and environmental risk factors. This is a multicentric transversal study in grappa, it has taken place in Tunis between January and march 1999 with a sample size of 1340 patients.