Immunisations - I won't say much as each to their own I guess... however given my previous job sure there are adverse reactions but the risk of catching the various diseases is higher and if you saw what can happen to the little cherubs if they catch them - it aint pretty.
What I will say is when searching on the internet for information/ "facts" about vaccination, be careful which ones you base your decisions off.
Even rotavirus is pretty horrid. It is a gastro and the NT had an outbreak of it a few years back (we were one of the 1st to have the vaccination) and is a pretty full-on gastro for anyone, let alone young bubs.
So I understand that when your bub has a reaction to a vaccine that it can be pretty scarey and concerning, but please think carefully about what could happen if they actually got the disease in comparison before you make that decision.
It also often means that when they get to kinder/school age that if there is an outbreak that they will get sent home until it dies down...

Please don't think I am having a go at anyone's decisions, just trying to provide some more info as I have seen both sides of the story.