How common is pulmonary aspergillosis in the us?

Uncommon: Pulmonary aspergillosis is an uncommon infection in the immuno competent population, but is much more prevalent in patients whose general or local (pulmonary) immunity is compromised (hiv +, patients receiving chemotherapy, multiple disease conditions including COPD etc.).

Fairly common: Pulm aspergillosis comes in multiple forms. Abpa is fairly common and is underdiagnosed.