"A closer look at the ethics of fetal tissue research, however, reveals a duty to use this precious resource in the hope of finding new preventive and therapeutic interventions for devastating diseases. Virtually every person in this country has benefited from research using fetal tissue. Every child who’s been spared the risks and misery of chickenpox, rubella, or polio can thank the Nobel Prize recipients and other scientists who used such tissue in research yielding the vaccines that protect us (and give even the unvaccinated the benefit of herd immunity). This work has been going on for nearly a century, and the vaccines it produced have been in use nearly as long. Any discussion of the ethics of fetal tissue research must begin with its unimpeachable claim to have saved the lives and health of millions of people. Critics point to the underlying abortions, assert that they are evil, and argue that society ought not implicitly endorse them or even indirectly benefit from them, lest it encourage more abortion or make society complicit with what they view as an immoral act. Yet they have overwhelmingly partaken of the vaccines and treatments derived from fetal tissue research and give no indication that they will foreswear further benefits. Fairness and reciprocity alone would suggest they have a duty to support the work, or at least not to thwart it."