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.
A brake booster is an enhanced master cylinder setup used to reduce the amount of pedal pressure needed for braking. It employs a booster set up to act with the master cylinder to give higher hydraulic pressure to the brakes and/or lower force applied on the brake pedal through a brake booster push-rod.