Sylvia,
As you posted, breastfeeders can get rotavirus. The
diifference between breastfeeders or vaccinated bottle feeders
vs unvaccinated bottle feeders is the need for IV
fliuds. As the ped said its very contagoius. I and a few other of
my pedaitrian freinds refer to play groups as
"infection clubs". Chances are the parents have diarrhea too.
-Rob