I gather too that Costco will also arrange for free 'booster' shots at 6 months (as is recommended) for those who get the initial Hep A shots as a result of this scare.
I commend Costco for such fast action in this case and in going far beyond just 'recalling' the product. Other companies seem to tell people to just junk it, not even bring it back for a refund. I have seen other companies not even admit anything till months after a product they sell has been identified as a culprit in passing on disease, etc. I don't think I have heard of any other company ever providing/paying for a medical intervention after something like this. I have no idea if they were told to do all this (by government authorities) or if they are doing it all on their own, but, I am impressed.