Agree with the sentiment against these selfish people. However, there is another piece of this puzzle and lets see how many responses are made toward this view. A couple of years ago I was getting my shingles vaccine. In the room was a world map and shown were different countries with different colors designating infectious disease proliferation. Much of Europe showed a big increase in Measles. So I asked why, Marge, the pharmacist said it is because a lot of European immigration comes from countries that have low to no vaccinations. This is due to financial or cultural restraints.
Probably both some religions have objections