Yes, it's the Hepatitis B.
It is a VERY good thing to make it clear to ALL re ped or hospital doc(if you're having a hospital birth?) BEFORE you go into labor, that you don't want this vax.
My baby sister just had her first baby. She had a very difficult pregnancy-lives in a VERY hot climate, and had to work FT right up to delivery. Long story short, she didn't do her research about vaxes.
She was not told my niece would be getting the Hep B, doesn't recall...