A 70 yr old friend of mine is not planning to get the COVID vaccine.

[Celerity]

24. The Johnson & Johnson (likely soon approved in the US) and others do use them in the manufacturing

process (see my origianl reply) plus both the Moderna and Pfizer vaccines used them in testing leading up to the development (so I was too broad in my agreeing with that part of your reply). That said, the Moderna and Pfizer vaccines do not use them in their manufacture though and Catholic Organisations say those two are not morally compromised.

https://www.nbcnews.com/health/health-news/how-cells-taken-decades-old-fetal-tissue-are-used-covid-n1242740




AstraZeneca’s COVID-19 vaccine is in Phase 3 trials in the US and also uses them for manufacture.

In four of the vaccines, the human fetal cells are used as miniature “factories” to generate vast quantities of adenoviruses, disabled so that they cannot replicate, that are used as vehicles to ferry genes from the novel coronavirus that causes COVID-19. When the adenoviruses are given as a vaccine, recipients’ cells begin to produce proteins from the coronavirus, hopefully triggering a protective immune response.

The fifth vaccine, which has shown promise in monkeys and is headed for human trials as soon as this summer, is what is known as a protein subunit vaccine. Researchers at the University of Pittsburgh use HEK-293 cells to manufacture the coronavirus’ spike protein—a vital part of its structure—which is used to trigger an immune response. The vaccine is delivered through a skin patch with 400 tiny needles.