Blood Type Distribution

I saw this post on Reddit:

I didn’t see a source citation in the post but the chart shows the blood type distribution % by country.. I’ve always been told that the transplant wait list for B+ is pretty long in Southern California. This gives one reason: there are less people with my blood type in the US. Worldwide, this chart says 22% of the population is B+, but it’s only 8% in the US. This shrinks the potential donor pool, thereby making the wait time a lot longer. I joked about moving back to Canada but the B+ percentage is about the same as the US. Taiwan is a lot higher at 24% of the population but with already four years accrued on the UNOS list, the remaining wait time is probably similar to starting over in Taiwan.