in regards to tdap shot prior to baby being born

Kellie
My OB "requires" everyone who is going to be around a newborn baby to get the tDap shot. 
My husband and I got it before our first daughter was born (she is now 2 1/2)
I got my shot when I was 35 weeks (having our second little girl next week) but all literature my husband has read states that it is not needed more than once every 10 years. My uncle who is a physician agrees with him. 
Anyway, Curious as to what your physicians are suggesting
  
Thanks!