Children's Hospital of Philadelphia Vaccine Education Center
Provides complete, up-to-date and reliable information about vaccines to parents and healthcare professionals
Immunization
Every Child By Two
An organization devoted to raising awareness of the critical need for timely immunization and to foster a systematic way to immunize all of America's children by age two
CDC Immunization Information Page
Information includes Spanish language versions, vaccine safety, answers to frequently asked questions, related news, links/resources