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  • admin posted an update in the group Group logo of On This Day – HistoryOn This Day – History 4 months ago

    On this day — February 23, 1954
    Mass polio vaccine inoculations start
    Pittsburgh elementary school students are the first group to receive Dr. Jonas Salk’s new polio vaccine. The disease that for centuries has paralyzed and killed millions will be almost eradicated by the end of the 20th century.