What can you do to prevent these parasites?
Check the seams and tufts of mattresses in hotel rooms as soon as you gain access. You can get your money back and go somewhere else. It’s happened to me many times.
If you stay overnight at someone's home, again do an inspection. You can't afford an infestation if they have one.
Reduce the amount of personal items into your home, overnight house-guest are subject to inspection.
Reduce clutter and hiding places in your home. Clean around your bed regularly and inspect the areas as you do.