This booklet provides parents with information about immunizations and vaccine-preventable diseases, balances the benefits and risk of vaccination, and responds to inaccuracies or misinformation about immunizations and vaccine-preventable diseases. Section 1 presents a message to parents about vaccination. Section 2 offers facts about vaccine-preventable diseases (measles, mumps, rubella, diphtheria, tetanus, pertussis, polio, haemophilus influenzae type b, hepatitis A and B, and varicella). This section explains that proper immunization saves lives, prevents the spread of disease, and saves money. Section 3 describes how the immune system and vaccines work. Section 4 helps parents understand the importance of vaccinating early rather than waiting to receive any recommended vaccinations. Section 5 answers questions about specific vaccines. Section 6 explains that proper adolescent health care includes immunizations. Section 7 discusses legal requirements and considerations related to vaccinations. Section 8 highlights the safety of vaccines, discussing vaccine approval and monitoring by the U.S. Food and Drug Administration. Section 9 compares the risks of disease and serious complication to the risk of serious reaction to a vaccine. Section 10 presents news stories about individuals who have contracted diseases because of not being vaccinated. Section 11 presents a list of resources. (SM)