My puppy was dewormed on Dec 23rd 2010...then got her 2nd shot on Jan 14th 2011....It has been a week and she is now pooping out live worms again several times a day. I called the vet and they claimed that this was because the shot is helping get rid of the worms, but I am confused because right after the shot she was pooping out dead ones, not ones that moved. I am not sure I believe what they are telling me. They are saying I need to bring in a stool sample in a week to them and if there are eggs she still is infected, but if not she isn't...but I don't understand because if in another week there are still live worms coming out of her stool doesn't mean she is still infected? Just need some opinions from other dog owners.