Hi barbc, great question – hopefully someone reading has done a study. (If you have, please send us a link or drop your finding here.)
Looking up on a couple of AIs for: Any correlation between positive or negative Blood Type and Long COVID
I got this – Rh Factor and COVID-19
Some research suggests:
- Rh-negative blood types may have a protective effect against SARS-CoV-2 infection, intubation, and death.
- Rh-positive individuals may be more likely to test positive for COVID-19 compared to Rh-negative individuals.
and this: Rh-negative blood: Rh-negative individuals, regardless of their ABO blood type, may also be at a lower risk of infection and severe illness, including Long COVID (ARR = 0.79; 95% CI, 0.73–0.85).
Looking up for: Any correlation between positive or negative Blood Type and COVID vaccine injury
- Rhesus (Rh) Factor. The search results don’t provide specific information about correlations between Rh factor (positive or negative) and COVID-19 vaccine injuries.
And the other
- A meta-analysis did not find an association between Rh-factor and COVID infection.
There could be a built-in positive bias in play here. Still, great question. And if anyone reading has some info please do drop it here.