Aren't vaccines made on monkey kidneys or something?
https://my.clevelandclinic.org/health/diseases/21053-rh-factor
https://www.thelancet.com/journals/lancet/article/PIIS0140-6736(04)16746-9/fulltext
>When Salk developed his vaccine, instead of using human tissues, as did the scientists who won a Nobel Prize for first growing poliovirus in tissue culture, he used minced-up rhesus macaque monkey kidneys, which were remarkably efficient poliovirus factories. Those who sought to supplant Salk's formaldehyde-inactivated vaccine with live, attenuated oral vaccine also used monkey kidney cultures. Despite a manufacturing problem that, at best, left six children who received the vaccine paralysed in the arm, and despite concerns about wild simian viruses, Salk's shots were declared safe and effective after 1954 field trials. The next year, after grudging approval by sceptical government regulators, free Salk shots were made available throughout the USA.
https://my.clevelandclinic.org/health/diseases/21053-rh-factor
https://www.thelancet.com/journals/lancet/article/PIIS0140-6736(04)16746-9/fulltext
>When Salk developed his vaccine, instead of using human tissues, as did the scientists who won a Nobel Prize for first growing poliovirus in tissue culture, he used minced-up rhesus macaque monkey kidneys, which were remarkably efficient poliovirus factories. Those who sought to supplant Salk's formaldehyde-inactivated vaccine with live, attenuated oral vaccine also used monkey kidney cultures. Despite a manufacturing problem that, at best, left six children who received the vaccine paralysed in the arm, and despite concerns about wild simian viruses, Salk's shots were declared safe and effective after 1954 field trials. The next year, after grudging approval by sceptical government regulators, free Salk shots were made available throughout the USA.
