Spanish Study to Analyze the Histopathological, Ultrastructural and Microbiological Findings Obtained in Autopsies of Patients Who Died Due to COVID-19

Inclusion Criteria: * Patients with COVID-19 infection confirmed by PCR. * Death related to active infection by COVID-19 or its complications. * Informed consent given by the subject's relatives to perform an autopsy according to the autonomous community requirements. * Informed consent given by the subject's relatives for the inclusion of samples in the Biobank. Exclusion Criteria: * COVID-19 infection diagnosed exclusively by serological methods. * Advanced or terminal chronic disease. * Inadequate security level of the autopsy room.