We have previously performed a histopathologic analysis of cardiac microvascular dysfunction with regard to capillary dilatation, fibrin deposition, and microhemorrhages of this cohort of 20 patients with COVID-19 [48] (same donors as the lung cohort), which we now complemented with the analysis of microthrombi in heart tissue samples by immunohistochemical staining for VWF. Here, VWF is linked to COVID-19.