Ventilation is good, CO2 levels are low (generally never go above 650 ppm), masks are required, though that mostly consists of surgical masks. Office is large and spacious, with 2-3 staff and generally only 0-1 patients in the waiting room at a time. Sometimes front desk staff lowers mask when not directly interacting with patients but the ventilation is really quite good. Medical staff is sympathetic to vulnerable patients and their concerns and acknowledge long covid as a real condition.