During the investigation I did extensive research on immunization and SIDS. We couldn't just say "SIDS" as that's considered the easy 'cop-out' for cases of child abuse as many apparent SIDS cases were found to actually be cases of child abuse/murder. But this actually was a SIDS case and we had to substantiate it. The best I could find was a statistically significant correlation between the 6-month shots and SIDS. That allowed us to cite SIDS and close the case.
But I remember that family, the child's death and the research I did on their behalf. The immunization risk calculations are based upon infants not having mature immune systems whereby they are vectors for disease as the mother brings them along in many public places. In effect children are Faustian victims of a risk-vs-reward numbers play, but the numbers reflect 19th century medical realities, not 21st century medical capabilities and the victims are almost all on the reward side. I say that's now the risk to the population.
They really need to update their calculations. Far more children are injured and killed than the likelyhood of getting diseases such as small pox, rubella, etc.
Only if one was going oversea's did they need the vaccination....