In the 30 days following infection, research shows that catching Covid 19 is linked to a fivefold rise in the risk of deep vein thrombosis (DVT) and a 33-fold increase in the chance of a potentially deadly blood clot on the lung. The findings, which were published in the British Medical Journal on Thursday, may explain why the prevalence of blood clots in England has doubled since the epidemic began and the number of people dying from them, as compared to the same times in 2018 and 2019.
They also assist to put the extremely low risk of blood clots linked with Covid 19 immunization into perspective. “The degree of difficulties related with Covid 19 is considerably stronger and lasts for much longer than what we may receive following immunization,” said Dr Frederick Ho, a public health lecturer at the University of Glasgow who was not involved in the study.
Although prior studies revealed that getting Covid 19 was linked to a higher risk of blood clots, it was unknown how long this risk persisted and if mild infections enhanced people’s risk as well. Anne-Marie Fors Connolly of Ume University in Sweden and her colleagues studied the risk of DVT, pulmonary embolism (a blood clot in the lung), and various types of bleeding, such as gastrointestinal bleeding or a burst a blood vessel in the brain, in more than 1 million people with confirmed Covid 19 infections and more than 4 million people who were not infected.