We didnt have it done in hospital, we waited until the 6th week. We figured, what are the real chances of bubs getting Hep B in the first 6weeks of life, when we will be home most of the time anyway. Personally, I'm so glad we didnt get it done til later. I dont think it is warranted IMO. We wont be getting bub no 2 done in hossy either....Will wait again.