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Saturday, July 4, 2026

Line for July 4, 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 first oral polio vaccines are licensed

  2. 2
    Vaccine measles, mumps, rubella, chickenpox

    The combined MMRV vaccine is licensed

  3. 3
    Vaccine measles

    An improved, weaker measles vaccine goes into use

  4. 4
    Discovery tuberculosis

    Robert Koch announces the germ that causes tuberculosis

  5. 5
    Campaign smallpox

    WHO starts a plan to rid the world of smallpox

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