Your baby is born with some protection from illness because they get special proteins from their mother called antibodies before they're born. But it's temporary, and the antibodies slowly fade away.

Adam Hayes, Ph.D., CFA, is a financial writer with 15+ years Wall Street experience as a derivatives trader. Besides his extensive derivative trading expertise, Adam is an expert in economics and ...

Greg Daugherty has worked 25+ years as an editor and writer for major publications and websites. He is also the author of two books. Ebony Howard is a certified public accountant and a QuickBooks ...