1) Relationship between the ABO Blood Group and the COVID-19 Susceptibility https://doi.org/10.1101/2020.03.11.20031096
https://www.medrxiv.org/content/10.1101/2020.03.11.20031096v2
Comment :The results showed that blood group A was associated with a higher risk for acquiring COVID-19 compared with non-A blood groups, whereas blood group O was associated with a lower risk for the infection compared with non-O blood groups. (Ravi)