Nosocomial diseases are pathologies that appear during medical
		care that were not present at patient admission. Being able to simulate
		the propagation of such diseases inside an hospital and to track them
		is therefore important to fight and avoid them. The Pyocyanic Bacillus
		is a frequent example of such a disease.  It is important to understand
		how such bacteria propagate since more and more of their strains become
		antibiotic resistant. Therefore we must not only be able to treat them,
		but also to block their diffusion to avoid them. The work presented
		here consist in a simulation of the propagation of pyos inside an
		hospital taking spatial problems into account, and allowing to better
		understand the infection diffusion mechanisms and to propose some means
		to circumvent it. The simulation considers both the spacial
		representation of the hospital, and the different actors, healthcare
		workers, patients and visitors.