translated from Spanish: What is the blood type most vulnerable to coronavirus?

After declaring the coronavirus a pandemic, a group of doctors and scientists from China conducted a study to determine the relationship between blood groups and the disease.  Those with blood type A are reportedly more vulnerable or prone to contracting the virus, while those with type O are more resistant to infection. 

Professionals from Beijing, Wuhan, Shanghai and Shenzhen published the research on the MedRxiv portal, which shares preliminary findings of the analyses but was not yet reviewed by colleagues or published in academic journals. “The proportion of blood groups A and O in patients with COVID-19 was significantly higher and lower, respectively, than in normal people,” the report determines, adding that age and sex do not have much effect on distribution. For their part, the professionals who participated in the study were Jiao Zhao, Yan Yang, Han-Ping Huang, Dong Li, Dong-Feng Gu, Xiang-Feng Lu, Zheng Zhang, Lei Liu, Ting Liu, Yu-Kun Liu, Yun-Jiao He, Bin Sun, Mei-Lan Wei, Guang U Yang, Xinghuan Wang, Li Zhang, Xiao-Yang Zhou, Ming-Zhao Xing and Peng George Wang.You can see the full report here. In this note:

Original source in Spanish