Source: PTI New Delhi: There is increasing evidence to suggest that COVID-19 is not just a disease of the lungs as initially thought but can also cause dangerous blood clots which need to be immediately removed to save limbs in some cases, say experts. Global studies have shown that the prevalence of blood clot formation known as deep vein thrombosis (DVT) in hospitalised COVID-19 patients is 14-28 per cent and is a lower 2-5 per cent for arterial thrombosis. The India experience is similar, said experts, stressing that the infection is about the blood vessels as much as about the lungs. "We are dealing with five-six such cases per week on average. This week it has been one a day of such complications," said Dr Ambarish Satwik, vascular and endovascular surgeon at Delhi's Sir Ganga Ram Hospital.