I haven't completely made up my mind yet what to do with DS when he arrives. I've done a lot of reading on the subject over the years as I've had some nasty reactions to vaccinations, including a particularly bad one to polio about 10 years ago. My naturopath gave me some drops and herbs to help my body deal with vaccs I needed for a work trip to Sth America (yellow fever etc) and they seemed to help (but obviously I can't compare what the reaction would have been without them). Maybe that's what I'll end up doing with DS.