“…Rarely has PB occurred in patients with a chronic pulmonary disease such as asthma, cystic fibrosis, lymphangiomatosis, acute chest syndrome associated with sickle cell disease, and after heart transplantation [ 1 , 4 , 5 , 6 ]. Several infectious agents have been shown to be involved in PB development, including human bocavirus, H1N1 influenza virus, adenovirus, SARS-CoV-2 virus, Mycoplasma pneumoniae , and opportunistic fungi [ 7 , 8 , 9 , 10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 ]. Antibiotics recommended for PB caused by infectious bacteria include macrolides, in particular, azithromycin, which has anti-inflammatory and immunomodulatory activity [ 18 , 19 ].…”