Tuberculosis infection in children visiting friends and relatives in countries with high incidence of tuberculosis: A study protocol.

Introduction: Tuberculosis (TB) is a global infectious disease. In low-incidence countries, paediatric TB affects mostly immigrant children and children of immigrants. We hypothesize that these children are at risk of exposure to Mycobacterium tuberculosis when they travel to the country of origin of their parents to visit friends and relatives (VFR).