Sorry to pop this up again, but having lost two little pups in our practice this week with confirmed Parvo I just hope to catch a few more people.
Firstly please make sure you see the bitch, in one pups case the Mum was never seen, ask if she is vaccinated particularly if your are taking the pup before it has had any vaccinations. Please do not take home very young puppies one of these pups was only 5.5 weeks old, there are not just health benefits to staying with Mum, but also social benefits.
Then visit your vet and take their advice on vaccination of your puppy.
We are in the cosy home counties in what would be considered an affluent area - so not a classical area for Parvo.
If I can save even one family from the heart break I have witnessed in the last week this will be worthwhile.