Don’t spoil the hysteria, the freeper medical college is on a roll.
Well, they left it in the polio vax deliberately. They knew it was there but didn’t want to spend time and money refining it out. So why be shocked that since the later 20th century cancer becomes so much more prevalent. Add in after 1950s oir diets are more processed foodstuffs with not so great/carcinogenic additives, add in all the extra chemicals they shoved into cigarettes, and even the carcinogenic stuff in sunscreens they say to lather yourself in....
And yes, I now see them all getting up from their chairs are freaking out...