Oxford University scientists in the UK revealed that there is a very low risk of rare complications after RNA vaccines against coronavirus on the cardiovascular system. At the same time, COVID-19 can lead to more dangerous cardiovascular diseases. This is reported in an article published in the Nature Medicine magazine.
Researchers analyzed data on 38 million people aged 16 years and older, vaccinated from COVID-19 in England from December 1, 2020 to August 24, 2021. Indicators of hospitalization or death cases from myocarditis, pericarditis and cardiac arrhythmias were evaluated. For 1-28 days after vaccination or positive PCR test results on COVID-19.
Results show that the risks of myocarditis associated with two MRNA-based vaccines (Astrazeneca and Moderna) are slightly higher in people under the age of 40, especially after the second dose of the Moderna vaccine. It is comparable to the likelihood of myocarditis after COVID-19. These people were estimated that these people had 10 additional cases of myocarditis per million people after a positive test on SARS-COV-2 and 15 more cases per million after the second dose of the MODERNA vaccine.
Scientists emphasize that, although the risks of myocarditis are slightly higher than at COVID-19, the vaccine is the best alternative than the contamination of coronavirus, which can lead to more dangerous and frequent complications of various organ systems, for example, thrombosis.