Michigan State Medical Society: http://www.msms.org

CDC- National Immunization Conference: http://www.cdc.gov/nip/NIC/default.htm

 The Vaccine Page: http://www.vaccines.org

The Children Hospital of Philadelphia, Vaccine Education Center: http://www.vaccine.chop.edu

Immunization Action Coalition: http://www.immunize.org

National Network for Immunization Information: http://www.immunizationinfo.org

Institute for Vaccine Safety- John Hopkins Bloomberg School of Public Health: http://www.vaccinesafety.edu