Diploma awarding honorary membership of the London Vaccine Institution, London, England, 1826
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The introduction of vaccine into the body for the purpose of inducing immunity. Coined originally to apply to the injection of smallpox vaccine, the term has come to mean any immunising procedure in which vaccine is injected.
Smallpox is an infectious virus unique to humans. It results in a characteristic skin rash and fluid-filled blisters. After successful vaccination campaigns throughout the 1800s and 1900s, the World Health Organisation certified the eradication of smallpox in 1979. Smallpox is the only human infectious disease to have been completely wiped out.