r/vaxxhappened↗
Robert F KennedyJr is just another liar
The original pro vaccine subreddit shining a light on Anti-Vaxxers on all forms of media. Post screenshots, articles and anecdotes. Anti-Vaxxers: Check out Rule Two
345k subscribers33 posts / mo in Sep 2026 (incl. ~3% by known bots)25 authors / mosince 2017
r/vaxxhappened has 345k members (+0.3% over the last 12 months). It gets about 33 posts a month from 25 people. Top topics: AntiVaxxisms, Anti-Vaxxers and Anti-Vax Protests.
When to post on r/vaxxhappened
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How r/vaxxhappened has grown
Subscriber growth
Subscribers over time
Monthly activity
Posts, comments and authors per month
Topics and brands on r/vaxxhappened
Top topics
Share of the subreddit's posts
- AntiVaxxisms0.4%
- Anti-Vaxxers0.4%
- Anti-Vax Protests0.3%
- Vaccination Debates and Policies0.3%
- Measles Outbreaks & Cases0.3%
Brands people mention
Most-mentioned brands and sites, last 12 months
- CDC
- NPR
- Comic Sands
- MSN
- Nature
Everything else about r/vaxxhappened
Posting rules and account requirements, how often posts get removed, who writes here (age, gender, countries), what people ask for, how they talk, and related subreddits — all in the full report.
Posts and activity for Sep 2026. Members from Reddit's subscriber counts. Read from the same data the app runs on. Our research