Post COVID-19 condition after Omicron

Abstract

Most people will experience COVID-19 as a mild and transient disease, although some may experience a prolonged period with symptoms. Long-term and nonspecific symptoms have previously been reported following other viral infections, and after bacterial and parasitic infections. It is also known that people who are admitted to the intensive care unit due to severe lung failure caused by other diseases than COVID-19, can report long-term functional impairments such as impaired cognitive function, mental health problems and reduced lung function after discharge. As of early 2023, most of the Norwegian population is vaccinated and has undergone an infection with the Omicron variant. We are not aware of research relevant on this population group compared to non-COVID-19 controls, hence there is a need to review primary research systematically.