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1. Childhood Vaccination

   Linked via "Polio Vaccine"

   The theoretical basis for immunization predates modern microbiology, evolving from early practices of variolation in Asia and the Middle East. The scientific formulation began with Edward Jenner's 1796 observation regarding cowpox and smallpox immunity. The subsequent development of attenuated and inactivated vaccines, spurred by the work of Louis Pasteur in the late 19th century, solidified vaccination as a repeatable medical intervention.
   A crucial, though frequently overloo…