A new study from Sweden shows that people who have had Covid-19 are more susceptible to other serious health problems, including those with mild illnesses. This includes problems with blood clotting after healing.

Research shows that people who recover from Covid-19 are more likely to have blood clotting problems than those who have never been infected. These risks are much higher for people with severe covid-19 illness, but the risk is increased even for people with mild illness.

This study looked at the results of more than one million Swedes with laboratory-confirmed covid-19 infections between February 2020 and May 2021. They then compared them with people of similar age and sex who tested negative for coronavirus during the same time period. The experts are particularly concerned about reported cases of deep vein thrombosis, pulmonary embolism, and bleeding.

Overall, the team found an increased risk of all three conditions in covid-19 patients, up to 70 days for deep vein thrombosis, 110 days for pulmonary embolism, and 60 days for any type of bleeding. any blood. The findings of this study suggest that covid-19 is a risk factor for deep vein thrombosis, pulmonary embolism, and bleeding, the researchers wrote

It was previously known that SARS-CoV-2 infection can cause acute cardiovascular and cardiac problems, especially in severe cases. And this is not the first study to show a link between covid-19 and blood clotting problems. The advantages of the new study are that Sweden's nationalized healthcare system allows researchers to track virtually every confirmed case of covid-19 in the country for the duration of the study. and easily compare their health with those without confirmed covid.

Infections say they are all associated with blood clotting problems, but covid-19 may represent a higher single risk factor than typical infectious disease, the authors said. They speculated it could be due to the virus infecting blood vessel cells, or to its inflammatory effect on the immune system. Like other studies, this new study points to a clear spectrum of increased risk. For example, more than 6% of covid-19 patients in the ICU developed a case of pulmonary embolism, a life-threatening condition caused by a blood clot in the lungs, but the same is true for 2% of patients who are critically ill and only 0.02% of Covid-19 patients are mild.

Even mild patients had a relatively higher incidence of these clots than those who never had covid-19 (0.004%). While this risk may be small for mild cases of covid-19, a large number of people in this group may experience these and other serious health problems.

Another rather important limitation, and a matter of time, is for most types of studies that measure the likelihood of longer-term health problems related to covid-19. As of the end of May 2021, Sweden has only opened its doors to provide vaccines to people over the age of 50, it will be another month before the majority of adult residents are vaccinated.

Studies have also shown that vaccines reduce the risk of severe and long-lasting symptoms, even in people with sudden infections. Therefore, the numbers in this study may be difficult to apply in areas where people have been vaccinated. Research has found that the rate at which these problems appear in people has decreased over time, perhaps in part due to vaccinations.
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