Where do you get this notion? None of the Fathers teach this. Nowhere in the Scriptures does it teach this. In fact, the very opposite is and has always been taught in the Church.
-A8
My bad.
From a Catholic Homily:
that is, the three people that were born without original sin: Jesus Himself, Saint John the Baptist, and the Blessed Virgin Mary.
Jesus, of course, is God, so He had no sin. Saint John the Baptist was freed from sin at the moment of the Visitation when he leapt in his mother's womb upon hearing the words of Our Blessed Lady. At that moment, Our Lord removed original sin from his soul. He had been conceived with sin, but was born without. And, of course, now our Blessed Lady, who was conceived without original sin and, consequently, born without original sin. For not even one instant of her entire being did Satan have any dominion over her.