I would think so since the immune system is already on overload fighting to keep the transplanted organ adjusting, that any germs would be of a negative to a transplant patient, they already request that others that are not known to have any illness or ailment wear a mask so as not to subject the patient to any germs that may be lurking...the best to you
I believe that this may cause a great problem, and best to keep the person who is due for transplant away from any contagious illnesses, bacteria etc. To keep their immune system as strong as possible