COVID-19: Why would blood type matter?

In the past few weeks, 2 questions have been popping up:

1. Is there a connection between coronavirus SARS-2/COVID-19 and blood types?
2. Why?

Let’s assume for a minute that there is something to this:

Blood Type O more likely resistant to coronaviruses?

In the case of malaria, we have after all seen an advantage of O and disadvantage of A:

Blood Type O Most Protected From Malaria, Blood Type A The Worst

The issue:

In the case of malaria, transmission appears to be essential and different from SARS-2.

Blood type O conveys protection against malaria because RIFIN, a protein secreted by parasites, bonds weakly with type O blood cells while strongly linking to type A.

Now we have learned the following:

Blood clotting is less frequent in people with blood type O.

COVID-19 increases the risk of dangerous blood clots

This is only a possibility.

So how about the Rh factor?

Infections of viral origin and Rh(D) negative blood

Could this be related to transport in blood?

New research provides evidence that Rh proteins act as CO2 gas channels

In Rh negatives, harmful substances seem to be transported differently.

Please continue here…