Abstract
Internal and international human migration has increased worldwide in recent years. Migrants are generally people travelling from less to more economically developed geographical areas in search of jobs and better living conditions. The epidemiological profile of tuberculosis (TB) has dramatically changed in some high-income countries, partly because of migration. In many nations, a screening system for TB disease or latent TB infection (LTBI) has been set up in order to prevent the increase of TB prevalence, dissemination of Mycobacterium tuberculosis strains in the local community, or new incident TB cases. Nevertheless, several reports from different developed countries with well-performing screening and treatment systems have shown in the last few years that foreign-born TB patients do not significantly contribute to M. tuberculosis transmission in the native population.
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