What's your source for the chickenpox? I haven't found anything yet. It's a new vaccine though, and it wasn't routinely offered to my generation. I don't know how many people who've received it also have children.
It is a live virus though - so I find this particularly interesting that a source would suggest antibodies are passed due to having the virus, but not the vaccine. There is evidence to show that chickenpox antibodies are passed via breastmilk, I see no reason why the vaccine should be any different, other than just differences in concentration due to the immune response.
I was hoping you could tell me, LOL!
I actually can't find if there is a comparison to passive immunity (passed on from the mother to infant) or from only a vaccinated mother.
http://en.wikipedia.org/wiki/Passive_immunity#Artificially_acquired_passive_immunity