To summarize the findings of the past few studies which have been made available, I have made a quick video to help avoid all future confusion:
In short:
Protective association indicated for blood type O.
This has been shown in all recent studies from China and the United States.
There has been, however, conflicting regarding A, B and AB as some studies show A at highest risk and a new one blood type B and AB at highest risk.
More data with higher numbers of subjects is needed.
Protective association indicated for Rh negative blood types.
This has been consistent within the two studies from the United States (NYP and Boston).
For all data mentioned and discussed, visit the studies here…