2024-07-31 22:10:22
Some heart attacks and strokes after the anti-Covid vaccine. This is shown by a large study on 50 million people, practically the entire population of England, published in ‘Nature Communications’ by scientists from the universities of Cambridge, Bristol and Edinburgh. “This study further supports the large body of evidence on the effectiveness of the Covid-19 vaccine program, which has been shown to provide protection against severe Covid and has claimed millions of lives around the world,” said the lead author. Samantha Ip said. , researcher at Cambridge University.
The work – carried out thanks to the Data Science Center of the British Heart Foundation (Bhf) in the UK Health Data Research – was carried out by analyzing the anonymous health data of 46 million adults in the UK in a secure environment that available by the National Health Service, relating to the period between December 8, 2020 and January 23, 2022. Data scientists compared the incidence of cardiovascular diseases after the anti-Covid vaccine with the occurrence of the same viruses before vaccination or without vaccination, during the first 2 years of the national vaccination program which in January 2022 allows more than 90% of the population to be vaccinated with at least one dose of the vaccine , as demonstrated by William Whiteley, associate director of the Bhf Data Science Center and professor of Neurology and Epidemiology at the University of Edinburgh.
The researchers note that “.the occurrence of venous thrombosis, such as heart attacks and strokes, is up to 10% lower at 13-24 weeks following the first dose of the anti-Covid vaccine. After the second dose, the incidence was 27% lower with the AstraZeneca vaccine and 20% lower with the Pfizer/BioNTech vaccine. The incidence of common venous thromboembolism events, mainly pulmonary artery and deep vein thrombosis of the lower extremities, followed a similar trend.” Scientists recall that “the incidence of cardiovascular diseases is higher after Covid-19, especially in severe cases of the disease. This may explain why the incidence of heart attacks and strokes is lower in vaccinated people than in unvaccinated people”, although “further details – they point out – are beyond the scope of this study “.
“Previous research – the authors point out – has found that the incidence of rare cardiovascular complications is higher after some anti-Covid vaccines. For example, myocarditis and pericarditis following mRNA vaccines such as Pfizer/Biotech and thrombotic thrombocytopenia have been reported immune-mediated after adenoviral vaccines such as AstraZeneca one, This study supports these findings, but it is important – the researchers point out – that it does not identify new blood disorders associated with vaccine against Covid-19 and. offers more assurance that the benefits of vaccination outweigh the risks“.
“Given the important role of Covid-19 vaccines in protecting people from Covid – comments University of Bristol researcher Venexia Walker, the last author of the article – it is important to continue to study the benefits and risks associated . The availability of data on the entire population allowed us to evaluate different combinations of anti-Covid antibodies and to consider rare cardiovascular complications. “
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