Horizon 1 1 17 ACL : Articles dans des revues avec comité de lecture répertoriées par l'AERES International Nursing Review 50-57 Actors Cameroon Health Systems HIV AIDS Legitimacy Role Conflict Task Shifting 2009 fdi:010044280 ENG International Nursing Review 0020-8132 ISI:000263343800017 1 10.1111/j.1466-7657.2008.00680.x https://www.documentation.ird.fr/hor/fdi:010044280 https://www.documentation.ird.fr/intranet/publi/2009/02/010044280.pdf 56 Horizon (IRD) The high HIV/AIDS-related mortality among young adults is devastating countries in sub-Saharan Africa. The implementing capacity of the health systems is the main limiting factor of antiretroviral treatment (ART) scaling-up;(1) this capacity depends mainly on the health workforce. Tackling the issue of human resources for health is thus of paramount importance to achieve universal access to ART and for the survival of health systems in time of AIDS. To support such a process, the World Health Organization stresses the importance of task shifting(2) from medical doctors to nurses and from nurses to community health workers. Such task shifting is not easy to achieve but undoubtedly needed. This paper raises issues about the involvement of new actors(3) without precise redefinitions of roles and task-shifting procedures. We take the example of a 'Centre de PrEvention et de DEpistage Volontaire du VIH/sida'(4) in one major town of the Far-North province of Cameroon (Central Africa). The study was qualitative. Observations were carried out in the service and in-depth interviews conducted with health workers and actors of Cameroon's National AIDS Control Committee. These interviews were recorded and transcribed. The material was analysed using keywords. The involvement of new actors in a context of human resources for health shortage and health system crisis creates confusion and role conflicts, which lead to frustration. It favours the appearance of chinks within which these new actors slip and 'find their way' in the system; it finally raises problems related to their legitimacy and position within the existing hierarchy. It is necessary, when involving new staff members (particularly when they do not belong to internationally recognized health professionals such as nurses, doctors and pharmacists), to redefine roles and build precise task-shifting procedures so that everyone may still have a place in the whole system and feel useful. 106 ; 056 UR912