Nearly half of people with Coronavirus feel only partially recovered between six and 18 months after being infected.
A study into the long-term effects on patients in Scotland found those who were older, female or from deprived communities were more likely to be affected.
Researchers at the University of Glasgow say symptoms of long Covid include chest pain, confusion and breathlessness.
Dr. Jill Pell, who carried out the study, wants to see more support for those affected.
