There was no difference in C-reactive protein (29.30 [4.52–79.9] mg/l vs. 46.8 [± 56.8] mg/l; p = 0.405) or procalcitonin (0.08 [0.05–0.35] ng/ml vs. 0.07 [0.06–0.15] ng/ml; p = 0.5378) between the control-group and the COVID-19 group. Here, CRP is linked to COVID-19.