Tens of thousands of people will need to be recalled to hospital after a serious OVID-19 infection to check if they have been left with permanent lung damage, doctors have told the BBC.
Experts are concerned a significant proportion could be left with lung scarring, known as pulmonary fibrosis. The condition is irreversible and symptoms can include severe shortness of breath, coughing and fatigue.
Research into the prevalence of lung damage caused by COVID-19 is still at a very early stage. It's thought those with a mild form of the disease are unlikely to suffer permanent damage. Bu