In reference to the mom with multiple transfusions--if she received any of that during the birth or before as the baby was still connected to her blood supply, exposure would have happened already blood to blood. That's a number of different donors, so increases the odds. When babies are transfused by our blood bank, the same unit is used repeatedly for portions as needed to risk exposure to numerous donors, even with twins, a single unit is split several times and both babies receive from the one unit. If her platelets were a pheresis unit, it is a single donor. But you still have a good deal of different donors in all those units..I can imagine she's going in circles with all the -what ifs-running through her mind. Georgeanne Mattise, MT(ASCP),LLLL, mostly MOM