Aren't there no-vax in US?

And antibiotics? And anti-X-ray? There's a million different medical advances, you can always find someone against (or suspicious of) a few of them. That doesn't mean all of conservatism is against all of them, as woodruffw would have you believe.

I don't understand where you believe it's been claimed that conservatism is unilaterally against all technological progress. It isn't. Conservatism is best understood as a social phenomenon that interacts with technological progress varyingly, depending on the effect that whatever particular technology has on social values any particular group of conservatives happen to priotitize.

X-rays do not particularly threaten any social scheme.