2024-07-31 09:01:00
One of the biggest concerns raised by the Covid-19 vaccine is whether it increases the risk of cardiovascular problems such as thrombosis related to heart death and death. Now, a study carried out on more than 45 million people in England seems to give an important answer to this issue: published in ‘Nature communications‘, the research shows that The incidence of heart attacks or strokes is reduced after vaccination against covid-19 than before or without vaccination.
Directed by Cambridge Universities, Bristol y EdinburghThe report analyzed the anonymous medical records of 46 million adults in England between December 8, 2020 and January 23, 2022. Scientists compared the incidence of cardiovascular diseases after vaccination with the incidence before or without vaccination, during the first two years of systemic vaccination.
The study showed that the incidence of arterial thromboses, such as heart attacks and strokes, was up to 10% lower in the 13 to 24 weeks after the first dose of the Covid-19 vaccine. After the second dose, the incidence was about 27% lower after receiving the vaccine AstraZeneca and up to 20% less after receiving the vaccine Pfizer/Biotech.
The incidence of common venous thrombotic events, mainly pulmonary embolism and deep vein thrombosis of the lower leg, follows the same pattern.
“This study further supports the large body of evidence on the effectiveness of the Covid-19 immune system, which has been shown to save millions of lives around the world,” said lead author, Samantha Ipresearcher at the University of Cambridge.
This research gives patients reassurance that the first, second and booster doses of the Covid-19 vaccines are safe.
Previous studies have shown that the incidence of cardiovascular complications is higher after some Covid-19 vaccines. For example, cases of myocarditis and pericarditis have been reported after mRNA-based vaccines, such as the Pfizer/Biotech vaccine, and vaccine-induced thrombocytopenia after adenovirus-based vaccines, such as the AstraZeneca vaccine. This study supports these findings, but it is important to note that it did not identify any adverse cardiovascular conditions associated with the vaccine and provides more assurance that the benefits of the vaccine outweigh the risks.
“This study across the UK gives patients peace of mind that the first, second and booster doses of Covid-19 vaccines are safe. “It shows that the benefits of the second dose and booster doses, with less common cardiovascular events (myocardial infarctions and strokes) after vaccination, than the very rare cardiovascular complications,” says William Whiteley. , from the University of Edinburgh said.
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