I have heard claims that cells from aborted fetuses are involved in the production of vaccines such as MMR. Is this true?
For instance, this page from the Kennedy Institute of Ethics at Georgetown University:
Is it true that there are vaccines produced using aborted foetuses?
Some of the vaccines currently used to prevent diseases such as rubella, measles, rabies, poliomyelitis, hepatitis A, chickenpox or smallpox are produced using tissues from human abortions.
The most widely used foetal cells are WI-38 and MRC-5. The WI-38 cells were derived by Leonard Hayflick in 1962 from the lung of a 3-month female foetus 2.The initials WI refer to the Wistar Institute, a body of the University of Pennsylvania, Philadelphia, and number 38 to the foetus from which the cells were obtained. The MRC-5 cells were obtained in 1966 from the lungs of a 14-week male foetus .The initials MRC indicate Medical Research Council, a body from London. Other cells derived from surgically-aborted foetuses are: WI-1, WI-3, WI-11, WI-16, WI-18, WI-19, WI-23, WI-24, WI-25, WI-26, WI-27, WI-44, MRC-9, IMR-90, and R-17 (obtained from lung); WI-2, WI-12 and WI-20, (skin and muscle); WI-5 (muscle); WI-8 and WI-14, and WS1 (skin); WI-4, WI-9, WI-10, WI-13 and WI-15 (kidney); WI-6, WI-21 and WI-22 (heart); WI-7 (thymus and thyroids), WI-17 (liver); FHs74Int (small intestine); and PER.C6
The page links to this page at the Bioethics Observatory at the Catholic University of Valencia, which goes on to consider the ethical questions posed from a Catholic point of view.