To date, there are two human diploid cell lines which were originally prepared from tissues of aborted foetuses (in 1964 and 1970) and are used for the preparation of vaccines based on live attenuated virus: the first one is the WI-38 line (Winstar Institute 38), with human diploid lung fibroblasts, coming from a female foetus that was aborted because the family felt they had too many children (G. Sven et al., 1969). It was prepared and developed by Leonard Hayflick in 1964 (L. Hayflick, 1965; G. Sven et al., 1969)3 and bears the ATCC number CCL-75. WI-38 has been used for the preparation of the historical vaccine RA 27/3 against rubella (S.A. Plotkin et al, 1965)4. The second human cell line is MRC-5 (Medical Research Council 5) (human, lung, embryonic) (ATCC number CCL-171), with human lung fibroblasts coming from a 14 week male foetus aborted for "psychiatric reasons" from a 27 year old woman in the UK. MRC-5 was prepared and developed by J.P. Jacobs in 1966 (J.P. Jacobs et al, 1970)5. Other human cell lines have been developed for pharmaceutical needs, but are not involved in the vaccines actually available6.
So, from what this says, fetuses aren't currently being aborted to create each dose of this vaccine. But the line that it comes from originally was started with tissues from aborted fetuses. As someone that is pro-life to the core, this ingredient in vaccines bothers me.
Human-diploid fibroblast cell cultures can be found in the following vaccines:
Hep A (Vaqta)
Hep A/Hep B (Twinvax)
These 2 also contain it but listed as WI-38 human diploid lung fibroblasts