*** w50 5/15 p. 159 Letter ***
It is freely acknowledged that the fluid from a person of one type of blood may kill a person of another type of blood. If, now, you donated your blood, and your type of blood killed the person receiving the transfusion, would you be guilty of murder? Or would the doctor or nurse that administered the transfusion be guilty of the murder? Would you not be at least an accessory to a murder?
No court anywhere would make a blood donor legally responsible for the death of the recipient of a blood transfusion, let alone murder.
An exception might be in the case of HIV or Hepatitis, where an infected individual knowingly donates their tainted blood, hoping to create a maelstrom of chaos in the blood donor system. It is a criminal offense in Canada to knowingly attempt to infect a sexual partner with HIV or hepatitis, especially if you do not inform them of your positive STI status.
When you are hospitalized and in need of a blood transfusion, you are now required to sign a specific consent form stating that you understand the risks and benefits that have been explained to you by the physician. You assume liability for your choice to accept or refuse a blood transfusion. This does not absolve the hospital, its physicians or nurses from negligence or malpractice.
In the case of an emergency, Universal Donor blood (Type O Negative) is always given, as it is the safest to use when time is of the essence. A person who is unconscious and has no medical directive to the contrary (no blood card, DNR, etc.) is assumed to want their life saved by whatever means possible. That is a basic tenet of laws relating to medical care.
Donor blood goes through so much screening and preparation before it is administered to a patient - it is safer than it has ever been since transfusions have been used in medical practice. People who are HIV positive or who have a host of other medical conditions are denied the privilege of donating blood.
The statement in the WT from the 50s is clearly trying to scare people away from being blood donors, by making them feel that they would be "bloodguilty" for any negative outcome from the use of their blood.