Know more about the screenings, tests and shots that you and your family may need. Review these guidelines and bring them to your next doctor's visit. You and your doctor can make sure your family's medical checkups and shots are up to date. Our Preventive Health Guidelines describe necessary screenings for children from birth to 2 years, ages 2-20, and adults ages 21 and older. Check out the Centers for Disease Control and Prevention as your source for information on preventable diseases and how to protect yourself and your family.