The investigators hypothese that lung involvement due to COVID-19 may cause structural changes in the lung in the long term. In this study the effects of structural changes in the lung on pulmonary function tests, exercise capacity and quality of life will be examined.

Coronavirus disease-19 (COVID-19) has a clinical spectrum ranging from asymptomatic cases to severe cases requiring intensive care hospitalization due to respiratory failure. The disease mostly infects the lower respiratory tract. Typical computed tomography findings of lung involvement are bilateral, peripherally located ground glass density and consolidations. There is a close relationship between tomography findings and clinical severity. It is not known whether there will be complete recovery in the lungs.

Investigators will evaluate pulmonary structures with chest computed tomography, respiratory capacity with pulmonary function tests (PFTs), exercise capacity with six minutes walk test and quality of life with short form-36 (SF-36) im patients who survivors of COVID-19 at least 6 months after hospital discharge.

Inclusion Criteria:

• Patients who were ≥18 years
• COVID-19 confirmed by Real-Time PCR
• At least 6 months after discharge

Exclusion Criteria:

• Patients who were < 18 years
• Pregnancy
• Become bedridden after discharge

Survivors of COVID-19 aged over 18 years old who had been admitted in University of Health Sciences, Dr. Suat Seren Chest Disease and Surgery Training and Research Hospital for COVID-19 patients in İzmir, Turkey.