When a patient is infected with COVID, the virus damages the vessels of any of the lungs leading to clotting (thrombosis) of vessels which can lead to sudden death. This virus can attack both the venous and the arterial system leading to a poor outcome. Deep Vein Thrombosis (DVT) is a clot in the vein and is typically identified with severe pain , redness and discoloration of skin, this can travel to the lung and cause a condition namely Pulmonary Thromboembolism (PTE), which is a probable cause of sudden death.