We've allowed all the shots except the flu shot to our daughter... she'll be 3 years old here in a few months.
I briefly read through some of the responces and high fever is something to be concerned about if you end up going with the shots. Our daughter was constantly fighting fever's after she got her shots but we where able to maintane them thankfully. As of right now she seems to be doing very well and is extremely smart for a kid of her age
When I was a kid there wasn't a 10th of the shots kids get today....