It's really quite disgusting to see so many posters rounding up on one mother whose only 'crime' is to make a different parenting choice to the majority when she's just trying to do what she believes is best for her children.
It is NOT harming other people. If someone gets ill because they have a compromised immune system, then they are ill because of their compromised immune system, not because a few parents have chosen not to inject their babies with something they don't believe they need. If a pregnant woman contracts rubella, then the problem is her own lack of immunity, not that of someone else's child.
Whatever your views on vaccination, I find it hard to believe that people think we should be routinely forcing healthy children to have a medical procedure that they don't need, and that their parents don't want for them. Giving a vaccine is an invasive procedure, it has to remain a free choice.