Did the Black Plague change Rh- %s in Europe?

From our own study:

RhD negative subjects have increased the risk of developing of certain heart diseases, respiratory diseases and some immunity and autoimmunity related diseases, for example rheumatoid arthritis. The general pattern suggests that RhD negative subjects could have problems with autoimmunity, could be more resistant to infections of viral origin and could be less resistant to infections of bacterial origin.

In the past few years, I have examined many studies related and somewhat related to our own findings. If you are a return reader, you are probably aware of the studies I have shown regarding Chikungunya where the only Rh- members of a family of 28 was the only one not infected by it. You may have also seen the admittedly smaller study regarding Ebola where among the patients not a single one was Rh- as well as a study showing that the common flu might be far less common in Rh negatives.

You may have also seen the studies about HIV patients and how there were Rh negatives among them, but in much lower frequencies than among the controls.

Please be also aware that the studies were all from Africa or India and I have added a study showing most Africans listed as Rh- actually being Partial D and most Southeast Asians listed as Rh- actually being Weak D.

That needs to be taken into consideration and unfortunately there are no studies to my knowledge showing blood type frequencies among HIV and AIDS patients in Europe where Partial and Weak D is rare.

Needless to say, our biggest findings were about COVID and once again, the findings of our original study seemed to be confirmed.

The question now is about the Black Plague which is of bacterial origin. However:

Why were Basque Country, Poland, Bohemia and Milan spared from the Black Death?

Aren’t these hotbeds for Rh negative blood and potentially at much larger frequencies of Rh- individuals than today?

Only within a couple of years, Rh- frequencies in Silesia for example have gone down significantly.

There is also the Celtic Curse:

Though it is well known that the plague was responsible for the deaths of nearly half of the European population at the time, evidence also suggests that it may be responsible for the high rates of a disease called hemochromatosis; a disease of excessive iron storage, that “is the most common inherited single gene disorder in people of Northern and Western European descent.”

https://www.aaas.org/hemochromatosis-and-plague

Let’s see another study on that:

Results: The respective frequencies of “British Isles” and Scotland reports were significantly greater in hemochromatosis probands than in controls. The respective frequencies of “Europe Not British Isles,” Italy, and Poland reports were significantly greater in controls. Aggregate “British Isles” and Scotland indices were significantly greater in hemochromatosis probands. The “Europe Not British Isles” index was significantly greater in controls. Approximately one-quarter of hemochromatosis probands and controls reported “Native American” ancestry; the corresponding country of ancestry index was not significantly different in probands and controls. C282Y frequencies >0.0800 were reported from England, Ireland, Scotland, Wales, Brittany, and Denmark.

https://pubmed.ncbi.nlm.nih.gov/15002926/

I think it’s fair to say that the Celtic Curse happens to be more frequent among populations with higher Rh- frequencies and a direct association is indeed possible as well looking at the findings above.