[Serious events: from statutory requirements to the implementation].

From 2005, PACA area has formed think-tank group a priori risk in the transfusional chain. It has enabled to determine each step of the elementary process and evaluate the frequency, the seriousness and critical effect of the errors. Blood sample and conformity are the most critical points and depend on the vigilance identity. In September 2007, the southern blood bank of France has settled 12 nonconformities levels of blood samples. They send the listing of the nonconformities every month. This listing enables the executive staff to determine the errors and, therefore, to solve them. The regional notification of 2007 to 2008 confirms analysis of the think-tank team. Hence, we were able to list the most serious cases. Public and private hospitals have to notify the serious events and will be bound to evaluate professional practices. These acts will be taken into account by the regional-medical contract.