Vacer Babies are born with immune systems that can fight most germs. but there are some serious diseases they can’t handle. That’s why they need vaccines to strengthen their Immune system. These diseases once killed or harmed many infants, children and adults. But now with Vaccines, your child can get Immunity from these diseases without having to get sick. And for a few vaccines, getting vaccinated can actually give you a better immune response than getting the disease would