r/vaxxhappened is a subreddit with 345k members. The community frequently discusses hate, worst, vaccines, rfk jr, and vaccine, and the most common flair used is mod approved™ and measles.
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
Popular Topics in r/vaxxhappened
#1
Hate
72 posts
#2
Worst
59 posts
#3
Vaccines
54 posts
#4
Rfk Jr
54 posts
#5
Vaccine
47 posts
#6
Measles
45 posts
#7
Children
34 posts
#8
Autism
28 posts
#9
Cdc
28 posts
#10
Vaccination
24 posts
Flair Used in r/vaxxhappened
#1
Mod Approved™
: "Interactions with antivaxxers"
3 posts
#2
Measles
: "An unvaccinated 18-year-old has died from complications of measles in Pennsylvania. The Mifflin County Coroner determined the cause of death was acute disseminated encephalomyelitis (ADEM), a rare and severe neurological complication of measles."
2 posts
Member Growth in r/vaxxhappened
Yearly
+590 members(0.2%)
Similar Subreddits to r/vaxxhappened
r/antivax
30k members
-0.6% / yr
r/Autism_Parenting
109k members
42.6% / yr
r/Coronavirus
2.6M members
-0.0% / yr
r/DebateVaccines
25k members
5.6% / yr
r/Health
3.6M members
0.7% / yr
r/publichealth
159k members
6.0% / yr
r/RFKJrForPresident
11k members
3.8% / yr
r/RFK_Jr_is_a_Stooge
3k members
9.5% / yr
r/skeptic
353k members
6.9% / yr
r/unvaccinated
21k members
2.1% / yr
About
GummySearch helps people research Reddit communities by organizing activity, growth, themes, and post-level signals into one place.
This page gives a focused view of r/vaxxhappened, including current member size, discussion patterns, product reviews, and related communities to explore.
This data is synced periodically so insights stay current and useful for ongoing research.
Last updated: October 15, 2026