On the use of chimpanzee DNA in vaccines

I read about this in 2020, and thought, well of course they would. Of course they would. And a couple weeks later, as sometimes happens, my suspicions were confirmed when my buddy Jay brought home a used copy of Yuval Harari's 21 Lessons for the 21st Century, and I went through it and found this. I have no idea how this guy got any clout, he's a joke.