The stray dog gave birth to a litter of puppies. What should I do?

It's not that I don't support you to have a puppy, but I think stray dogs will have some germs more or less. Secondly, newborn puppies need their mother's milk very much. If the mother doesn't take good care of it after birth, she can feed it with milk, but don't feed it with milk the next day, which will easily lead to diarrhea. I've had this experience before. In case the bitch is raising a puppy, I don't think so, so the bitch will be very sad.