Rota, Maria Cristina, et al. “Legionella Pneumophila and SARS-COV-2 Co-Infection: The Importance of Laboratory Diagnosis”. Annali dell’Istituto Superiore Di Sanità, vol. 57, no. 3, Sept. 2021, pp. 199-00, doi:10.4415/ANN_21_03_01.