Wikipedia's first sentence called it “renowned polish - american medical researcher who is best-known for having developed the hugely successful oral”. Today it says “polish-american medical researcher”.
Measured, not asserted. Every count, date and revision on this page was taken from Wikipedia's own history and checked against the live article. The words quoted are theirs.
Machine-checked against the full current article on 2026-08-03.
We saved snapshots of this article over twenty years; you are reading the 2005 one. Red dashes: removed from Wikipedia since.Pale dots: rewritten; the numbered note shows what it says now.Red text: written in or rewritten since the previous snapshot.1 tap a number or a side note to jump between them
The opening as it read in 2005
Albert Bruce Sabin ( August 26 , 1906 - March 3 , 1993 ) is a renowned Polish - American medical researcher who is best-known for having developed the hugely successful oral vaccine for Polio . Born in 1906 in Białystok , Russia (now Poland ), he emigrated 1921 to America with his family. Sabin studied medicine at New York University and developed an intense interest in research, especially in the area of infectious diseases . By 1946 he had become the head of Pediatric Research at the University of Cincinnati . With the menace of polio growing, he and other researchers, most notably Jonas Salk in Pittsburgh, sought a vaccine to prevent or to ameliorate this illness. Salk's so-called "killed" vaccine was tested and released for use in 1955 . It was effective in preventing most of the complications of polio, but did not prevent the initial infection from occurring. Sabin's breakthrough occurred some five years later, when the United States Public Health Service endorsed his "live" virus vaccine for polio in 1961 . His product, prepared with cultures of attentuated polio viruses, could be taken orally, and prevented the actual contraction of the disease. It is the drug which has effectively eliminated polio from industrialized countries.1
This is Wikipedia's own text, saved in our repository. Their copy of it is revision 16687072.
The opening as it stood in 2010 10 passages from the previous snapshot no longer appear
Albert Bruce Sabin (August 26, 1906 – March 3, 1993) was an American medical researcher best known for having developed an oral polio vaccine .
Red text was written in or rewritten since the previous snapshot. Their copy is revision 370760450.
The opening as it stood in 2015
Albert Bruce Sabin (August 26, 1906 Białystok – March 3, 1993) was a Polish American medical researcher best known for having developed an oral polio vaccine .
Red text was written in or rewritten since the previous snapshot. Their copy is revision 667739105.
The opening as it stood in 2020
medical researcher Albert Bruce Sabin (born Abram Saperstein ; August 26, 1906 – March 3, 1993) was a Polish American medical researcher, best known for developing the oral polio vaccine , which has played a key role in nearly eradicating the disease .In 1969–72, he served as the President of the Weizmann Institute of Science in Israel.
Red text was written in or rewritten since the previous snapshot. Their copy is revision 963602732.
The opening as it stood on October 6, 2023
Medical researcher Albert Bruce Sabin ( / ˈ s eɪ b ɪ n / SAY -bin ; August 26, 1906 – March 3, 1993) was a Polish-American medical researcher, best known for developing the oral polio vaccine , which has played a key role in nearly eradicating the disease . In 1969–72, he served as the president of the Weizmann Institute of Science in Israel.
Red text was written in or rewritten since the previous snapshot. Their copy is revision 1178761157.
The opening as it stood in 2025
Polish-American medical researcher (1906–1993) Albert Bruce Sabin ( / ˈ s eɪ b ɪ n / SAY -bin ; born Abram Saperstejn ; August 26, 1906 – March 3, 1993) was a Polish-American medical researcher, best known for developing the oral polio vaccine , which has played a key role in nearly eradicating the disease . In 1969–72, he served as the president of the Weizmann Institute of Science in Israel.
Red text was written in or rewritten since the previous snapshot. Their copy is revision 1282439388. This is our newest snapshot; the live article may have moved again since.
Today
Wikipedia's first sentence called it “renowned polish - american medical researcher who is best-known for having developed the hugely successful oral”. Today it says “polish-american medical researcher”. Read the current article and compare.
2005
2010
2015
2020
Oct '23
2025
Counts in the opening at each snapshot. Green: the word gained ground. Red: it was cut. Grey: no change.
What Wikipedia says this is
Every article opens by defining its subject. This one was redefined since 2005, and today's defining sentence is their current revision.
Then
renowned polish - american medical researcher who is best-known for having developed the hugely successful oral
Now
polish-american medical researcher
Struck red text is no longer in the article; dotted amber text was rewritten. Every revision id links to Wikipedia's copy; the text shown is our own saved copy. Data: /data. Wikipedia text is CC BY-SA; quoted for the record; not affiliated with Wikipedia.
