US wait list and transplant data
The OPTN's secure transplant information database contains all national data on the candidate waiting list, organ donation and matching, and transplantation. This system is critical in helping organ transplant institutions match waiting candidates with donated organs. Institutions also rely on the database to manage time-sensitive, life-critical data of all candidates, before and after their transplants.
http://optn.transplant.hrsa.gov/data/You can also create a report using data, as I did here:
As of March 26, 2010 there are 84,142 patients waiting for kidney transplants. Of those 43,969 are Blood Type "O", 24,085 are Blood Type "A", 13,616 are Blood Type "B" and 2,472 are Blood Type "AB".
http://optn.transplant.hrsa.gov/latestData/rptData.asp