Developments by year
Every year since 1995 the Centers for Disease Control and Prevention (CDC), American Academy of Pediatrics (AAP), and American Academy of Family Physicians (AAFP) has endorsed an annual childhood immunization schedule. Prior to 1995, these groups updated the immunization schedule every few years as needed. Find out more about the development of vaccines.
Vaccine availability timeline
Scientists – in memoriam
Many scientists have made discoveries important to the development of vaccines. This page honors scientists who have died over the past several years whose work contributed to the science of vaccines.