More than two years after the appearance of Covid-19, knowledge of this virus is becoming more and more precise. A Swedish study was published this Thursday, April 7, in the British medical Journal (BMJ), which BFM TV echoes. It reveals that Covid-19 increases the risk of a bleeding event up to two months after infection with Covid-19, deep vein thrombosis, a blood clot in the leg, up to three months later, and pulmonary embolism, blood clot in the lungs, up to six months later. The coronavirus was already known to increase the risk of blood clots, but until now it was unknown for how long.
To do this study, the researchers followed more than a million people in Sweden who had been infected with Covid between February 1, 2020 and May 25, 2021. Patients they compared to more than four million people who had not been infected. To obtain these results, they then calculated the number of deep vein thrombosis, pulmonary embolism and bleeding in people who had Covid-19.
An increased risk in patients with comorbidities or severe Covid-19
According to experts, this risk is greater in patients with comorbidities and severe Covid-19. It was also more present during the first wave of the coronavirus epidemic, this would be explained by the improvement of treatments to fight against infection and by vaccination coverage, especially in older patients. Following this study, the researchers recommend measures such as the administration of treatments that prevent the formation of a clot in the blood vessels, they also recall the importance of vaccination.
Covid-19: these worrying conclusions on the long-term effects of the virus © Pixabay