According to a study published in Nature Communications, 1 in 20 people suffers from the long-term effects of COVID-19. The study found that long-COVID symptoms were more likely following severe infections requiring hospitalization.

In the study, the most reported long-COVID symptoms included breathlessness, chest pain, palpitations, and confusion, or brain fog. The study also showed that long-COVID was more likely to develop in individuals who were older, female, and from deprived communities. The initial results from the ongoing study found that, overall, 42% of people infected with COVID-19 reported feeling only partially recovered between 6 -and 18 months following infection.

The findings also showed that whilst recovery status remained constant over the follow-up periods of 12 and 18 months for most participants, 13% of people reported improvement over time and 11% reported some deterioration. Additionally, patients with pre-existing physical and mental health problems, such as respiratory disease and depression, were more likely to experience long-COVID.

The researchers noted that individuals with asymptomatic infection had no long-term impact, and people who had been vaccinated before infection with COVID-19 appeared to have protection from some long-term symptoms. The study discovered, however, that the impact on people with long-COVID was far-reaching, with a wide range of symptoms, effects on all aspects of daily life, and a lower overall quality of life. 

(Source: https://www.hindustantimes.com/lifestyle/health/one-in-20-people-suffer-long-term-effects-of-covid-19-study-101665728819628.html )