COVID-19: A Novel Disease

COVID-19 represents a major challenge for researchers worldwide. Although the fine mechanisms that lead to the cell and tissue damage in patient infected by SARS-CoV-2 and that develop the disease are still unknown, the global effort to find a cure brought scientists worldwide to produce a considerable number of publications that are slowly disclosing how the virus works and how the human body responds to the infection. The development of the disease, in fact, seems to be related to both a direct damage of the virus on the cell or on particular structures in the tissue and how the immune system and the inflammatory process respond to the infection. Of particular interest is the finding of a peculiar feature of the disease leading to intussusceptive angiogenesis in the lungs of deceased patients that might represent an anatomopathological fingerprint of the same infection.