Scientists hunt for hidden cause of long COVID breathlessness

This study aims to understand why some people continue to experience shortness of breath and exercise limitation months after having COVID-19. Researchers will examine 200 adults who had COVID-19 3-18 months ago, comparing those with ongoing symptoms to those who have recovered. The main goal is to identify if problems with blood vessels in the lungs are causing these breathing difficulties, and to rule out other potential causes like muscle weakness, heart issues, or deconditioning.