r/Vaccine↗
Promoting evidence-based vaccine science
Vaccines save lives by preparing your immune system to fight harmful pathogens. This subreddit is dedicated to factual, science-based information and news on vaccines. We are not doctors, and nothing here should be considered medical advice. We strongly oppose all forms of science denialism, anti-vaccine ideology, and conspiracy theories. We will not host vaccine debates.
12k subscribers138 posts / mo in Sep 2026124 authors / mosince 2015
r/Vaccine has 12k members (+51% over the last 12 months). It gets about 138 posts a month from 124 people. Top topics: Vaccine Appointments, Moderna Vaccines & Updates and Interviews.
When to post on r/Vaccine
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Visitors without an account can open 3 subreddit reports a day. The best time to post on r/Vaccine, removal risk and the rest of the report are one step away.
How r/Vaccine has grown
Subscriber growth
Subscribers over time
Monthly activity
Posts, comments and authors per month
Topics and brands on r/Vaccine
Top topics
Share of the subreddit's posts
- Vaccine Appointments0.7%
- Moderna Vaccines & Updates0.3%
- Interviews0.2%
Brands people mention
Most-mentioned brands and sites, last 12 months
- CDC
- Nature
- Chop
- World Health Organization
- JAMA Otolaryngology
Everything else about r/Vaccine
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