https://nypost.com/2020/03/17/people-with-blood-type-a-might-be-more-susceptible-to-coronavirus-study-finds/

People with blood type A might be more vulnerable to the coronavirus, while those with type O blood could be more resistant, according to a new preliminary study from China.

Researchers studying COVID-19 in its outbreak epicenter, Wuhan, and the city of Shenzhen found the proportion of Type-A patients both infected and killed by the disease to be “significantly” higher than those with the same blood type in the general public.

Type O patients, meanwhile, made up a smaller proportion of both those infected and killed by the virus.

“People of blood group A might need particularly strengthened personal protection to reduce the chance of infection,” wrote the researchers at the Centre for Evidence-Based and Translational Medicine based out of Wuhan.

Though the team, led by Wang Xinghuan, couched the study as “preliminary,” with more work needed to be done to develop concrete findings.

The research, published on Medrxiv.org, compared blood types of 2,173 confirmed coronavirus cases in Wuhan and Shenzhen to more than 3,694 healthy residents in the Wuhan area.

(I suspect this is A+, and B+ is most prominent in Asians and no mention ?)