Ok so this NOT meant to be a debate on the whole vaccination issue. I am sure every parent has their child's best interest at heart when they make these decisions.

I was reading a news article about an increase of disease risks because of some parents choosing to not vaccinate their children. Ie. a return of old diseases. I was reading the comments underneath and quite a few parents were claiming that these non vaccinated children are a risk to all the other children etc etc etc.

What I don't understand is that I vaccinate my child so that she isn't at risk of these diseases
How does a non vaccinated child now increase her chance of getting say measles if she's vaccinated?

Please explain...I am baffled....