We give multiple vaccinations because we do not know exactly when the puppy's immune system is ready to protect it. (2ndchance.info)
Regarding the administration of multiple vaccinations, pet owners must be less motivated by convenience and more concerned with the maintenance or improvement in their pet's health. (patrickmahaney.com)
A recently recognized factor in tumor development is the role multiple vaccinations may play in cancer development in dogs and cats. (1800petmeds.com)