The Pfizer, Moderna and AstraZeneca vaccines used to fight Covid-19 have been linked to rare cases of heart, brain and blood disorders. The findings come from a recent study published by the Global Vaccine Data Network, a research company owned by the World Health Organization.
Researchers assessed among more than 90 million people from eight countries the risk of side effects from 13 diseases of special interest following COVID-19 vaccination. This is the largest Covid-19 vaccine study to date.
The study found several cases of myocarditis – inflammation of the heart – in people who took the first, second and third doses of the Pfizer and Moderna vaccines. The highest rate was recorded after the second dose of Moderna.
The risk of periocarditis, another heart disease, was 6.9 times higher in people who took their third dose of the AstraZeneca vaccine.
The risk of developing Guillain-Barré syndrome, a rare autoimmune disease, was 2.5 times higher in people who took the AstraZeneca vaccine than what researchers expected.
It also found that the population taking the same vaccine had a 3.2 times higher risk of developing blood clots.
For neurological diseases, the researchers noted that the risk of acute disseminated encephalomyelitis was 3.8 times higher after the Moderna vaccine and 2.2 times higher after the AstraZeneca vaccine.
While the data warns about the possibility of contracting these diseases, the researchers explain that “the benefits of vaccination substantially outweigh the risks.”
Author: morning Post
Source: CM Jornal
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