Well, I heard some people talking just the other day. And they said you were gonna put me on a shelf. Well, let me tell you I've got some news for you. And you'll soon find out it's true. And then you'll have to eat your lunch all by yourself. Coz I'm al-ready gone, and I'm fee-ling strong.
So they need booster shots to build up immunity. Also, some people tend to lose their immunity over time if they don't receive the recommended booster shots. So booster doses are given to ensure that the immunity does build up even for those children in whom it didn't with the first vaccine. For some immunisations, your baby will need a course of vaccines to build up his defences and to provide life-long immunity.
Parvo Shots for Puppies. In order to prevent catching the parvovirus, it is best to schedule your puppy for vaccination. The parvo vaccine works by inserting live viruses that are very weak into the puppyâs body to stimulate the immune system. The viruses in the vaccine have been modified and rendered incapable of causing the disease.