All I can add is....For years, I always had my cats vaccinated as recommended, until my dear boy, Lionel, started limping and crying out in pain. After multiple trips to the vet, they finally did X-rays and a biopsy, to find out that he had developed an osteosarcoma (bone cancer) near his shoulder blade, and ultimately had to have his front leg amputated. The vet later disclosed to me that there were studies that showed a direct connection to the vaccines and sarcomas which developed in some animals at the vaccine injection site. (shoulder area). Luckily he lived to a ripe old age after the surgery. Since then I have refused any vaccines for my pets, with little pushback from the vets. (They know.)