FRANÇAIS :
L'objectif de cette enquête (680 questionnaires distribués, 177 retournés, 107 retenus) était d'évaluer la présence de substances (notamment interdites), leur consommation en cours d'incarcération, l'asepsie et les comportements à risques infectieux liés à l'usage de substances ou le tatouage. À l'exception du tabac, 25 % des détenus déclaraient avoir consommé de l'alcool, 49 % du cannabis, 29 % de la cocaïne, 9 % du crack, 20 % de l'héroïne et 23 % d'autres substances ou médicaments détournés (31 % par voie nasale, 14 % par voie intraveineuse). Parmi les usagers de la voie nasale, 50% déclaraient partager leur matériel (paille) et 31 % le désinfectaient avant de consommer. Parmi les usagers de la voie intraveineuse, 60 % déclaraient partager leur matériel d'injection et 67 % le désinfecter avant utilisation. Enfin, 27 % des détenus déclaraient s'être faits tatouer au cours de l'incarcération et 79 % rapportaient que le matériel utilisé avait été désinfecté. Les méthodes de désinfection étaient majoritairement non efficaces. Seuls 17 % mentionnaient un besoin d'informations supplémentaires.

ENGLISH:
The objective of this investigation was to evaluate the presence of addictive substances and their use among currently incarcerated individuals, asepsis and infection risk behaviors related to substance use and tattooing.
Method. The sample consisted of individuals over 18 detained in a French prison on December 11, 2008. An anonymous individual questionnaire to return by mail was distributed. It consisted of nine questions exploring: 1) The presence of substances (legal or illegal) or non-prescribed drugs, 2) Current substance use (excluding tobacco) by the inmate during his incarceration, 3) mode of consumption of these substances, 4) Risk behaviors of infectious disease contamination: sharing drug paraphernalia, method of disinfection; 5) The tattoo.
Results. Of the 680 questionnaires distributed, 177 (26%) were returned. Of these, 70 were not informative. The results presented are based on responses from 107 questionnaires (16% of distributed questionnaires). With the exception of tobacco, 87 % of inmates reported the presence of cannabis, 67% cocaine, 57% alcohol, 54% heroin, 28% crack and 29% other substances or diverted medications. With the exception of tobacco, 25% reported having used alcohol, 49% cannabis, 29% cocaine, 9% crack, 20% heroin and 23% other substances or diverted medications. Among inmates, 31% reported consuming nasally, 14% reported using the intravenous route. Among users of the nasal route, 50% reported sharing their material (straw) and 31% disinfected their equipment before consuming. Among users of the intravenous route, 60% reported sharing injecting equipment and 67% reported disinfecting such equipment before use. 27% of inmates reported having a tattoo done during incarceration and 79% reported that the equipment used for tattooing had been disinfected. Disinfection methods reported were however mostly ineffective. Only 17% of inmates reported a need for further information.
Conclusion. Information and prevention aimed at inmates and prison staff should be considered. Further investigation could be programmed on a larger scale. Issues of risk reduction must be taken into account in prisons. It is essential not to reduce them to needle exchange programs however, although this is also to be considered.