COVID-19 is more likely to cause rare neurological conditions than are caused by vaccines, according to a study published in the journal Nature Medicine.
The study, led by the University of Oxford, analyzed the health records of 32 million people in England to identify the risks of developing rare brain diseases before and after testing positive for COVID, or receiving the first dose of the vaccines. from Oxford-AstraZeneca Plc o Pfizer Inc.-BioNTech SE.
The researchers compared the frequency with which neurological complications occurred in set periods. Although it was concluded that vaccines can lead to an increase in neurological complications, such as Bell’s palsy and Guillain-Barré syndrome, the study revealed that contracting COVID it presented an even greater risk.
Rare cases of such complications led many countries to restrict the use of the Oxford-AstraZeneca vaccine to older age groups.
“We found different risks for different types of neurological conditions, depending on the vaccine people received”Said Martina Patone, study co-author. “However, these were substantially lower than the risks associated with a COVID-19 PCR test ″.
However, there were several limitations to the study. For example, only the risks associated with the first dose of vaccines were examined. AstraZeneca O Pfizer-BioNTechas the data on the second doses were limited at the time of the study.
“Vaccines against COVID-19 are very effective in reducing risks derived from serious complications of contagion by COVID-19“, said Julia Hippisley-Cox, co-author of the study.
Last week, regulators in the UK added Guillain-Barré syndrome to the list of rare side effects caused by the vaccine. Astra.
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