We've decided to not get the varicella/chicken pox.

Does anyone know from experience whether I need to get a CO form signed for this to be able to get the MIA payment? I keep hearing people say the 18 month one doesn't count, and you get the payment anyway, but I've never heard from anyone who hasn't actually got the 18 month vaccinations

They 'process' applications automatically, you don't have to claim it, so if we haven't got the 18 month ones done will the 'reject' it without a CO form? Will we need to sign a form? How does it work?