Data on the health status of migrants are still scarce. One of the reasons for this is that migration status has not been well recorded in official statistics and epidemiological studies. In order to obtain an adequate and standardised operationalisation of migrant status, we first need an exact definition of the terms "migrant" and "migration background". We discuss approaches to the definition of terms and the surveying of ethnic minorities and migrants, and then develop a basic set of migration status indicators for use in epidemiological research. This set of indicators includes country of birth of the father and mother, year of immigration, mother tongue, German language skills and status of residence. The key indicator for the identification of migrants is the country of birth of the parents and not the nationality as was previously often the case. Thus, the classification based on the judicial category of nationality is replaced by a classification based on the biographical event "migration". Migration brings with it specific life conditions and challenges that can impact health across several generations. An instrument for surveying migrant status must be further developed both to reflect the special conditions of the life situation resulting from the migration experience and to take as full account as possible of all aspects of a migrant's history.

This survey demonstrates the feasibility of cross-sectional surveys in European prison inmates and highlights the importance of surveillance of HIV prevalence and related risk behaviour among inmates. The continuing high HIV prevalence and potential for HIV spread in prisons should encourage decision makers in implementing or enhancing harm reduction and education programmes and substance abuse treatment services in prison.

A study in the United States has shown that HIV transmission has been occurring within the prison system in the state of Georgia.

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Providing health promotion activities for young prisoners while in custodial settings is key to addressing their unmet health and well-being needs and to facilitate their reintegration back into the community. Despite the barriers identified by this research, health promotion is to some extent being delivered in the partner countries and provides a foundation upon which further implementation of health promotion activities can be built especially when the benefits of health promotion activities, like dealing with the common problems of alcohol and drug addiction, mental health and communicable diseases are linked to successful reintegration.