It's a must I believe, I might be wrong. but in the doctors there is signs up saying even if your kids have missed them they still have time to get them done.
They tell us its to cover them for certain illnesses but in fairness the illnesses they do say they are for are common to kill children if they did catch them.
My oldest didn't have the R out of the MMR jab, but my other 2 have had it done. but my oldest had German measles at the time of the jabs so that might have been why.
I was watching a documentry some time ago saying certain places in the world they live in small jungle villages and they never catch any of these and they live longer and healthier than what we do, It's only when the western man comes along and enters their camp is when they have problems.