Authors’ response: importance of a careful investigation to avoid attributing Legionnaires’ disease cases to an incorrect source of infection Palazzolo, Claudia and Maffongelli, Gaetano and D’Abramo, Alessandra and Lepore, Luciana and Mariano, Andrea and Vulcano, Antonella and Bartoli, Tommaso Ascoli and Bevilacqua, Nazario and Giancola, Maria Letizia and Di Rosa, Enrico and Nicastri, Emanuele, Eurosurveillance, 25, 2001570 (2020), https://doi.org/10.2807/1560-7917.ES.2020.25.34.2001570