Informing a person may not help in preventing the spread of infection, as it is very difficult to change the sexual behavior of a person. A professional donor cannot be stopped from selling blood at another commercial blood bank. Genetic engineering and recombinant techniques can help in making good the deficiencies. The desired gene can be positive or negative. Often the idea is to have such outstanding persons contribute to a sperm bank.
Artificial insemination is done with ovum selected from woman with 'desirable' qualities.
They won't accept determinative research in the early embryo. They do not accept embryo research but accept benefits from such research. Many bio-ethicists recommend that the benefits should not be used, but they may be used for dying and suffering patients and when one might feel there is no need to care how the remedies are obtained. A technology once developed will mushroom ever within moral communities into unrecognized and unwarranted usages. The needs of developing countries are so great that the rich world should show greater understanding, brotherhood and concern for the development of the best possible technologies.