Coopération dans les cellules de crise COVID à l'hôpital et réseau de soin territorial.

The aim of this communication will be to describe how the crisis was an opportunity for collective activity to begin networking between differents stakeholders of healthcare system on the local territory. The ergonomic observation of the hospital and territorial crisis cells, since March 2020, shows that it is possible to follow the evolution of cooperation to the construction of a work collective. The conditions of this collectively management of the Covid-19 crisis are : organizational innovations, re-elaboration of rules and mutual aid, in order to cope with the shortage experienced by the hospital environment and the care system well before the crisis. In a diachronic approach, different step will be traced of collective activity. [ABSTRACT FROM AUTHOR]