These are information resources for parents about immunizations for their children:
Vaccine Information You Need http://www.vaccineinformation.org/
Parents' Guide to Childhood Immunizations http://www.cdc.gov/vaccines/parents/tools/parents-guide/index.html
Parents Speaking for Immunizations http://www.voicesforvaccines.org/
Voices for Vaccines, http://www.voicesforvaccines.org/, is a parent-driven organization supported by scientists, doctors, and public health officials, whose goal is to give parents a trusted resource to learn more about vaccines and why vaccination is so crucial for their children’s health and well-being—as well as the health and well-being of their communities.
The Children's Hospital of Philadelphia's Vaccine Education Center provides complete, up-to-date and reliable information about vaccines to parents and healthcare professionals: Vaccine Education Center http://www.chop.edu/centers-programs/vaccine-education-center#.V2sNb5MrKCQ
Infant and Childhood Immunization Resources http://www.cdc.gov/vaccines/parents/resources/childhood.html
CDC Vaccines & Immunizations http://www.cdc.gov/vaccines/index.html
The Pertussis Vaccine: Protect Yourself, Protect Your Family http://dph.georgia.gov/blog/2013-09-04/pertussis-vaccine-protect-yourself-protect-your-family
The Power to Protect: National Infant Immunization Week wass April 20-27, 2016 http://dph.georgia.gov/blog/2013-09-05/power-protect-national-infant-immunization-week-april-20-27
Books by Paul Offitt, MD https://www.google.com/search?q=paul+offit+book&oq=Paul+Offit&aqs=chrome.1.0l6.6930j0j4&sourceid=chrome&ie=UTF-8
Why I Vaccinate: Parent Testimonials- https://www.healthychildren.org/English/safety-prevention/immunizations/Pages/Why-I-Vaccinate-Parent-Testimonials.aspx
From the American Academy of Pediatrics: Immunizations - https://www.healthychildren.org/english/safety-prevention/immunizations/pages/default.aspx