Yes, puppy can get infection from the infected dog. Rabies can be transmitted through a wound or broken skin when in contact with the saliva of a rabid animal, e.g. even when there is saliva on an animal’s claw when it scratches to other. For transmission of disease from mother to puppies please fell free to talk to vet. You can get your dog vaccinated form vet to prevent from infection and booster dose may be given later.