I recognize that government funding for vaccine-skeptical research would be even more statistically significant than these declines in birth rates, but... this

I recognize that government funding for vaccine-skeptical research would be even more statistically significant than these declines in birth rates, but... this needs to be fleshed out much more. A huge problem has been identified, so now propose a mechanism and make a falsifiable hypothesis about how that mechanism will manifest in available data... Having said that, it's a huge fertility crash in all places that can I'll afford it.