Dear Ros, if you kind of follow the thought that pertussis immunity wanes
as we age ,then passive immunity wanes that is passed to baby during pg and
BF. So I would think teen moms would pass more pertussis immunity than
moms in their 30s because the teens are closer to their childhood vacs.
Lovely yuppy 3rd x Mom with BF baby with pertussis is in mid 30s. Does this
make sense? Sincerely, Pat in SNJ