1. Hygiene Laboratory of Paris; 75013 Paris France
2. District Health Service of Paris; 75017 Paris France
3. Technical Service of Paris Police Authority; 75004 Paris France
4. National Institute for Public Health Surveillance Health Survey; 94415 Saint-Maurice France
5. National Reference Centre for Legionella; Faculté de Médecine R. Laennec; 69372 Lyon Cedex 08 France