It's a dreadful disease
there is no rhyme or reason to which dogs make it and which don't. They usually have to get worse before they get better. Sending prayers that yours and the rest of the pups pull through.
Misty- Samoyed Mix, Tannor- Golden Retriever CGC
Robyn- GSD CGC, TC, Midnite-GSD CGC,TC, Brennan-Golden Retriever CGC, Batman-Husky/Greyhound , Apollo-GSD