Sorry, but that is not an “assumption”. It is one of the primary facts of epidemiology.
An unvaccinated population causes faster and wider spread, no matter what the original vector might have been.
Why do you think that if there is an outbreak and a vaccine exists, the first thing that is done is to vaccinate as much or the population around the outbreak source as possible?
None of this is saying that letting vector carriers into the US is a good thing....it is not. But not vaccinating children ain’t a good thing either. If you’re worried about the X-in-one vaccine, tell your doctor that you want individual vaccines in a series of shots.
I also dont want vaccines cultured using aborted fetal cells.
Most manufacturers now do not have alternatives anymore.