...there are always bad outcomes in any vaccination programme and 'acceptable' levels of fatalities, such as in the case of the recent vaccination programme against cervical cancer where a young girl died as a result.
However you're quite right that there's always a risk associated with vaccinations, but like the risk of anaesthetics versus the benefit of surgery: the benefits of vaccination hugely outweigh the risks. http://www.youtube.com/watch?v=eFVE8csrcRw