The Joe Rogan Experience
#2211 - Michael Shellenberger
Joe Rogan
And this is a bunch of different vaccines that we associate with stopping particular diseases. And what probably actually happened was there was some sort of herd immunity. And it's also the advent of sanitation. People in inner cities are using outdoor outhouses. There's stopping the use of DDT. There's a bunch of different factors that seem to play in that.
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