I'm having a hard enough time trying to convince myself to get up off my ar$e and go find some socks... COLD!
Good luck with them guys.
Any adults should be pretty safe coming out of a pound - parvo is always about. It's pups that pick it up easily. But do make sure you keep them locked up for a few days just in case.
My rescue pup's sibling was pts for 'parvo' in a pound. He just had one runny poo... and the two brothers have been fine. So take it with a grain of salt sometimes when a pound cries parvo.