Analysis in progress
Building the edit-history map
Pulling revision metadata, checking activity spikes, and preparing the charts.
Finding the article
Reading recent revisions
Counting editors
Checking revert pressure
Drawing timelines
Pulling revision metadata, checking activity spikes, and preparing the charts.
Last edited May 15, 2026
3,674
Total Edits
1,718
Unique Editors
7/10
Controversy Score
2001
Created
583
Watchers
27%
Minor Edits
11K
Monthly Views
5
Edits (90d)
The Wikipedia article on Vaccine has been edited 3,674 times by 1,718 different editors since it was created roughly 25 years ago in 2001. That works out to an average of about 147 edits per year, though activity is rarely spread evenly — most articles see long quiet stretches punctuated by short bursts of intense editing.
With a controversy score of 7/10, this is one of the more contested articles on English Wikipedia. A score this high means edits are frequently reverted — editors are undoing each other's work rather than building on it, which is the classic signature of an active dispute over how the subject should be described. Readers should treat sections of this article as potentially unstable, and check the talk page to understand what the disagreements are about.
Within the 500 most recent revisions we analysed, the single most active contributor is Citation bot, responsible for about 6% of the changes in that window. That is a fairly healthy spread, suggesting the article is maintained by a broad community rather than dominated by any one voice. The busiest year in our data was 2021, when editing activity peaked — spikes like this usually line up with real-world news events involving the subject.
The sections that show up most often in edit summaries are History, See also, Types, Production, Effects. These are the parts of the article that editors revisit most — a useful shortcut to where the action, and any disagreement, is concentrated.
All figures above are computed live from Wikipedia's public revision data. For a deeper explanation of what these numbers mean, see our guides on edit wars, article quality ratings, and how to read an edit history.
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Showing last 500 edits — 2020 to 2026
Sections appearing most in edit summaries.
| # | Editor | Edits | |
|---|---|---|---|
| 1 | Citation bot | 29 | |
| 2 | MedRobo | 14 | |
| 3 | AnomieBOT | 12 | |
| 4 | Medupdate | 12 | |
| 5 | Highfly3442 | 12 | |
| 6 | Srich32977 | 9 | |
| 7 | Whywhenwhohow | 9 | |
| 8 | MaryMO (AR) | 9 | |
| 9 | Julius Senegal | 9 | |
| 10 | Ozzie10aaaa | 9 |