20th century
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What links here
Smallpox vaccine
Vaccine
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Vaccination
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Medicine
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James Lovelock
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John A. Macdonald
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January 26
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List of infectious diseases
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History of medicine
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February 20
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Elbridge Gerry
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Edward Jenner
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England
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Colonialism
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Discredited HIV/AIDS origins theories
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Haida people
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Naturopathy
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Trafalgar Square
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Dermatitis
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Cowpox
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DNA vaccine
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1798
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1830s
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1790s
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