Ya, I totally buy into that. But they scare the shit out of new parents. We didn't do any immediate vaccines for my son and gave him like 2 or 3 only after he was 2+ years old and he's super healthy.
But my wife was terrified of SIDS because they keep it so non descript. Now, looking back, it's so obvious to me they don't give you any reasons WHY it happens because they just don't want to really tell you what's going on.