Wait till they hear about the vaccines all over the world synthesised by fetal stem cells. (To be clear, I have no problem with that, but just saying that hamster ovaries isn’t exactly the biggest thing to get freaked out over even if you’re determined to freak out over something.)

Note how I said “synthesized by” in the above statement. That’s another thing: this headline very strongly implies that there are hamster ovary cells (or fetal stem cells) in the vaccine. That’s not true, hamster ovarian cells are used to synthesize the vaccine, the vaccine is not comprised of them. That’d be like saying there are blenders in your smoothie or farmers in your bowl of rice. The finished vaccine is extremely carefully screened for contamination introduced during production, because having hamster cells in a vaccine would actually be disastrous: if you injected foreign mammalian cells into a person, their immune system would freak out and they’d go into severe anaphylaxis. Humans can’t even take blood from other humans unless it’s the right type FFS, and somatic cells like tissue grafts have even tighter compatibility requirements.