Infection with SARS-CoV-2 causes lasting damage to lung function.
Hugo D. G. van Willigen et al., One-fourth of COVID-19 patients have an impaired pulmonary function after 12 months of disease onset, PLOS ONE, Published: September 11(2023)
https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0290893
1 in 4 COVID survivors had impaired lung function 1 year on, study shows(Center for Infectious Disease Research & Policy/The University of Minnesota)
https://www.cidrap.umn.edu/covid-19/1-4-covid-survivors-had-impaired-lung-function-1-year-study-shows