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Saturday, April 11, 2026

Line for April 11, 2026

Put these 5 milestones in time order, earliest at the top. The years appear when you lock in your order.

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Earliest

  1. 1
    Vaccine polio

    The inactivated polio vaccine (IPV) is licensed

  2. 2
    Vaccine polio

    The first oral polio vaccines are licensed

  3. 3
    Elimination HIV and syphilis (mother to child)

    Cuba is the first country validated for ending mother-to-child HIV and syphilis

  4. 4
    Eradication smallpox

    The World Health Assembly declares the world free of smallpox

  5. 5
    Vaccine mumps

    The Jeryl Lynn mumps vaccine is licensed in the U.S.

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