Covid in the last six months could be at risk of a deadly side effect.People who caught the virus less than half a year ago could be more likely to get blood clots, with researchers in Sweden discovering a risk of deep vein thrombosis up to three months post-infection.The research also found that people with Covid in the last six months were more susceptible to a blood clot in the lungs.Reports also indicate that there is a greater chance of a "bleeding event" in the two months after being ill.The new research from Swedish provided more evidence to the vital use of vaccines to protect from Covid complications, which aren't limited when infected with the virus.Experts found that even mild, non-hospitalised Covid patients could be at risk of potentially deadly deep vein thrombosis and pulmonary embolism.They said: "Our findings arguably support thromboprophylaxis to avoid thrombotic events, especially for high risk patients, and strengthen the importance of vaccination against Covid-19."The chances of getting a blood clot were found to be higher during the first wave of the pandemic, which suggests improvements in treatment and wide-ranging vaccine coverage has lessened the risk.Researchers at the University of Glasgow looked into "living with Covid" as more governments ease restrictions.The researchers said the study "reminds us of the need to remain vigilant to the complications associated with even mild SARS-CoV-2 infection, including thromboembolism".Deep vein thrombosis (DVT) occurs when a blood clot forms on a deep vein, usually in your legs, and if the blood clot breaks off and travels into the lungs, it can cause a potentially fatal pulmonary embolism.