They say timing is everything, and that's definitely the case when it comes to childhood vaccines. They're most effective when they're given at the right time — and lots of careful consideration goes into deciding when exactly that is. Trusted SourceAmerican Academy of PediatricsImmunizationsSee All Sources [1]| What to Expect
The first two years of your baby’s life will be packed with more magical milestones than you can even imagine — from the first coos to the first giggles, steps and words. The skills your newborn will develop in what seems like a blink of an eye will not only make you fall in love every step of the way, but will also prepare your precious bundle for the momentous accomplishments that lie ahead.| What to Expect