This study, presented at the European Congress of Clinical Microbiology and Infectious Diseases in Lisbon and published in The Lancet Respiratory Medicine, used data on 39 adult patients from the UK National Health Service (NHS) between 7 March 2020 and 18 April 2021.
Recovery was assessed on the basis of the results of various tests in 2,320 patients five months after discharge and 33% of them after one year.
The researchers mainly collected blood samples during a five-month visit to test for the presence of various inflammatory proteins.
The study found that the proportion of fully recovered adults did not change significantly between five months (25.5%) and one year (28.9%) after discharge.
The study adds that being a woman, obesity, and mechanical ventilation in the hospital were less likely to recover completely after a year.
The most common symptoms of the so-called “long covid” are fatigue, muscle pain, physical slowdown, lack of sleep and shortness of breath.