Vaccine

The Wikipedia article on Vaccine has been edited 3,685 times since it was created in 2001, by 1,723 distinct accounts and IP addresses. That averages about 148 recorded changes a year — a steady weekly rhythm rather than a constant one.

Within the revisions retrieved for this report, the ten busiest contributors account for only about 25% of the changes. Editing that dispersed means no small group dominates the page; most changes arrive from editors who touch it once or twice. In the same window, about 13% of the retrieved revisions came from bot accounts, which handle routine work such as link repair and reference formatting.

Within the retrieved window, 2021 carries the most recorded activity, with 185 changes. 7 of those revisions fall in the last 90 days. The most recent recorded edit was 10 days ago.

Readership has been broadly stable across the last two years of pageview data. The clearest peak in that record falls in March 2025. Traffic spikes and editing spikes often line up, but the revision record alone cannot tell you which one caused the other, or whether an outside event drove both.

This report is built from the 500 most recent revisions retrieved from Wikipedia, about 14% of the 3,685 recorded edits. Figures drawn from that window describe the window only, and the report cannot establish why a change was made or whether it was correct. For older revisions, talk-page discussion and full context, follow the source history on Wikipedia.