🙁 Take some simple biosecurity measures if you buy another.
Firstly, wait a few months before you buy another. Secondly, disinfect any possible contamination routes (eg shoes). Disinfect the whole house if you wish.
Thirdly, when you’ve got the puppy keep it in a section of the house where no one can take boots in from outside and make sure everyone washes their hands before touching the dog. If you’re really feeling paranoid make sure everyone changes their clothes before they see the puppy after they come in from outside. Basically quarantine the puppy.
I had loads of dogs as a child growing up, never new one that died of parvo! Maybe Beagle’s have extra shite immune systems?