Also, blood parameters were measured: erythrocyte sedimentation rate (ESR) and C-reactive protein (CRP) as inflammatory; alanine transaminase (ALT), aspartate transaminase (AST) and gamma-glutamyl transferase (GGT) as biochemical; total cholesterol (TC), low-density lipoprotein (LDL), high-density lipoprotein (HDL), and triglycerides (TG) as lipid parameters.<h4>Results</h4>In the COVID-19 group, 93.7 % of participants had a mild form of the disease. Here, CRP is linked to COVID-19.