Re: Feeding frozen colostrum to NICU babies. Interestingly, I had a personal experience along these lines. My first child was in a NICU and allowed nothing by mouth for 5 days. I faithfully expressed my colostrum and froze it. She was permitted to nurse, and did well, and the EBM was never used, so I brought it home. I was determined that she would get that colostrum and I had my husband and mother try to feed it to her. She would take ordinary, fresh EBM but not that colostrum!! Finally my husband decided to do an unscientific experiment...he tasted the frozen colostrum and the frozen mature milk. He said the colostrum had a bitter taste, and he didn't blame the kid for refusing it! Re: the hepatitis vaccine -- are you sure that is a live virus? I thought it was a killed virus. I am heading over to the library tommorow and I will look it up. Anne Pfannkoch