WOW!

I cannot believe you are keeping the puppies in an unsafe situation like this. Why wasn't Anya vaccinated in the first place? How long did you try to housebreak her? Sometimes it can take a few months. You don't just throw them outside. It's obvious you cannot care for these puppies so please do the right thing and find them a better home, and if they are sold please make sure to let the new owners know that they were exposed to the parvo virus.