There is limited data available based on a couple of studies, and independent research into it from around the world is currently unavailable.
Also, the New European study seems to validate those findings.
However, peer-reviewed research and monitoring from other parts of the world are necessary to verify whether various blood types affect the risk of severe COVID-19 infection.
The COVID-19 pandemic has given rise to a lot of potentially dangerous misinformation. For reliable advice on COVID-19 including symptoms, prevention and available treatment, please refer to the World Health Organisation or your national healthcare authority.