re: Catholic Church says no to J&J Vaccine

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they probably all used HEK293 cells for validation but Moderna and Pfizer did not use them in production

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Depending on where you draw the bright line there is a huge amount of therapeutics and vaccines that have some involvement with cell lines the church would likely deem problematic. It is unlikely that any COVID vaccines are or will be "Catholic kosher" if you dig deep enough.

The HEK 293 cell line has been around since the early 70s and involved in a huge amount of medical research.