Amen. There was a whooping cough outbreak in the Dallas area about 5 or so years ago due to the influx of illegal aliens. These law-breaking parasites and their brats bring their diseases with them, then pass them on to the kids their myriad git sit next to in school classrooms. Just freaking lovely.
There would be no outbreak of pertussis, immigrants or not, if the kids were vaccinated, thanks to the moron parents who refuse to vaccinate, and the spineless bureaucrats in school administrations who let them get away with it.
To have an "outbreak", two things are necessary....a disease vector (immigrants) and a vulnerable population (unvaccinated).
Note...I was of the last generation before the pertussis vaccine, and actually had it as an infant. One of the few things from earliest childhood that I still remember.