Will Falconer, DVM Moderator
Hi Pat, and welcome!
You've been doing some things very right to have a dog cancer free for 3 years after osteosarcoma! That's a tough one. Keep up the good work, and don't let this guy anywhere near a vaccine, for the rest of his life. I'd also be looking at the Immune Path on my site, as I've seen some amazing help in my cancer patients from this immune enhancement.