1 Department of Biological, Geological and Environmental Sciences, University of Bologna, via San Giacomo 12, 40126 Bologna (BO), Italy.
2 European Society of Clinical Microbiology and Infectious Diseases (ESCMID) Study Group for Legionella Infections (ESGLI), Basel, Switzerland.
3 Laboratory of Microbial Ecology and Genomics of Microorganisms, Istituto Zooprofilattico Sperimentale delle Venezie, Legnaro, Italy.
4 Regional Reference Laboratory for Clinical Diagnosis of Legionellosis, Unit of Molecular Virology and Microbiology, Modena University Hospital, Modena, Italy.
5 CNR-National Research Council of Italy, Institute of Molecular Genetics "Luigi Luca Cavalli-Sforza",, Unit of Bologna, via di Barbiano 1/10, 40136, Bologna, Italy.
6 IRCCS Istituto Ortopedico Rizzoli, via di Barbiano 1/10, Bologna, Italy.