"Vaccines have been one of the chief public benefits of fetal tissue research. Vaccines for hepatitis A, German measles, chickenpox and rabies, for example, were developed using cell lines grown from tissue from two elective abortions, one in England and one in Sweden, that were performed in the 1960s. German measles, also known as rubella, “caused 5,000 spontaneous abortions a year prior to the vaccine,” said Dr. Paul Offit, an infectious-disease specialist at Children’s Hospital of Philadelphia. “We wouldn’t have saved all those lives had it not been for those cells.” Fetal tissue was “absolutely critical” to the development of a potential Ebola vaccine that has shown promise, said Dr. Carrie Wolinetz, an associate director at NIH, which last year handed out $76 million for work involving fetal tissue, or 0.2 percent of the agency’s research budget."
January 1, 1970
https://en.wikiquote.org/wiki/Use_of_fetal_tissue_in_vaccine_development