Thanks everyone and thanks Kawazuki for the link too.

I hate the way all the warnings tell you what the minor side effects are, but never the major ones. Just the comment that serious ones are rare and if they appear to contact the GP. To make an informed choice, they should say all of the effects and not list a generalisation. Unless, of course, I'm looking in the wrong places.

DH is concerned that if DD gets chicken pox, he will too as he has never had it before. I've explained that she can still get it even if immunised, but it should be a minor case. She isn't in childcare or playgroup, so chances of her getting it now is if we pass a sick child in the supermarket, so the concern is for when she is older, and then the disease is worse than when she is little. Still a bit to think about, but thanks for all the imput