Long Covid: Hidden lung damage spotted on scans

Some people with long Covid may have hidden damage to their lungs, a small pilot study in the UK suggests.
Scientists used a novel xenon gas scan method to pick up lung abnormalities not identified by routine scans.
They focused on 11 people who had not required hospital care when they first caught Covid but experienced long-lasting breathlessness after their initial infection.  Researchers say the findings shed some light on why breathlessness is so common in long Covid - though the reasons for feeling short of breath are often many and complex.
Source : BBC