No problem receiving vaccine laced br milk.  They are making it all sound
scarey because it's Rabies, for heaven's sake!  But all things we immunize
for are scarey things!  Anyway Hale says "Imovax Rabies Vaccine is prepared
from inactivated rabies virus.  No data are available on transmission to
breast milk.  Even if transferred to breast milk, it is unlikely to produce
untoward effects."  Remember, in general, it is the same for all vaccines,
safe to   give with no effect on breastfeeding or breastfed infant.
Sincerely, Pat in SNJ