Yes; international travel and commerce has caused the insects to spread; and I know that Zika, at least, has been shown to be passed from the female to the eggs. I’d be surprised if other viruses could not.
Plenty of people come to the US perfectly legally, and they could be carrying all sorts of things. (We had a case of Ebola some years ago.)
I am against illegal immigration; but I think we’d still have all of these diseases without it, unless we want to completely isolate ourselves from any international travel.
(My grandmother was still buying quinine to have on hand when she was old - you could still buy it it in the local grocery stores then).
Quinine is available on Amazon, or course. Prescription and Cinchona Bark herbal supplements.
Cinchona bark is the source for quinine.
Exactly. Just the ease of travel can spread diseases globally, especially airborne diseases.
When it comes to vector-borne diseases, it’s much easier to contain when it’s just one or two here and there. When it’s groups, it gets much harder. Look at the Yellow Fever outbreak of 1783 in Philadelphia, for example (sudden influx of groups from endemic area). Zika became a worry here with the arrival of groups of immigrants from endemic areas, but, so far at least, better contained thanks to modern methods.
Yes, we would still have diseases carried via international travel. Allowing millions to cross our southern border with no health checks and no record of ingress and destination(s) (as opposed to legal travellers) means it’s harder to trace those spreading diseases and contain the spread, so it’s somewhat more problematic.
I think we’re on the same page here?