Best thing we could do is stop admitting sick foreigners into this country.
My ancestors who came over would have been turned away for certain diseases.
Its not the antivaxxers who are infecting people and causing outbreaks.
By not vaccinating sufficient numbers of individuals, the easy spread of the contagion is made possible. They may not be the cause, but they are certainly assisting the spread.
Sometimes they are.
Father at centre of measles outbreak didn't vaccinate children due to autism fears