← All communities
Reddit community

r/COVID19

COVID-19. In December 2019, SARS-CoV-2 emerged in the city of Wuhan, China. This subreddit seeks to facilitate scientific discussion of this potential global public health threat. We have very strict rules. Please make sure to read them before posting or commenting. Moderators may lock or remove comments or posts at their discretion. Founded 2020 · 600.5K members · links only

600.4K members. The best post we have captured here reached 18.6K upvotes, which works out to 31 per 1,000 members.

31peak upvotes per 1,000 members
600.4Kmembers
18.6Kbest post
1.5Kmost comments
100posts we track

Open r/COVID19 on Reddit ↗

What actually lands here

The mix of post types among everything we have captured. Posting a link where almost nothing but images lands is wasted effort, and this is the fastest way to see it.

99%
Link 99% Text 1%

The topics it labels

Flairs are the community's own categories, and the closest thing a subreddit has to telling you what it wants.

Press Release 24 Academic Report 15 Preprint 15 Academic Comment 9 General 8 Epidemiology 7 Vaccine Research 6 Antivirals 6 Clinical 4 STUDY RETRACTED 1

What the ceiling looks like

The biggest posts we have captured here. Links go to the original on Reddit.

Stanford researchers confirm N95 masks can be sterilized and reused with virtually no loss of filtration efficiency by leaving in oven for 30 mins at…

↑ 18.6K 💬 1.1K link 2020

Number of people with coronavirus infections may be dozens of times higher than the number of confirmed cases

↑ 9.5K 💬 1.4K link 2020

At least 11% of tested blood donors in Stockholm had Covid19 antibody as of last week.

↑ 9K 💬 1.2K link 2020

Ending coronavirus lockdowns will be a dangerous process of trial and error

↑ 7K 💬 1.5K link 2020

NYC Health: Only 1.8% of deaths in New York City were without an underlying condition

↑ 6.8K 💬 1.1K link 2020

Not wearing masks to protect against coronavirus is a ‘big mistake,’ top Chinese scientist says

↑ 6.4K 💬 880 link 2020

In a paper from 2007, researches warned re-emergence of SARS-CoV like viruses: "the culture of eating exotic mammals in southern China, is a time bom…

↑ 6.1K 💬 465 link 2020

Antibody tests suggest that coronavirus infections vastly exceed official counts

↑ 5.7K 💬 943 link 2020

Correcting under-reported COVID-19 case numbers: "In the case of China, it is estimated that more than 700.000 cases of COVID-19 actually occurred in…

↑ 5.7K 💬 852 link 2020

Amid Ongoing Covid-19 Pandemic, Governor Cuomo Announces Results of Completed Antibody Testing Study of 15,000 People Show 12.3 Percent of Population…

↑ 5.2K 💬 1.1K link 2020

Communities its size

Within four times the member count either way, so the comparison is fair. Sorted by upside.

r/COVID19, in numbers

Answered from the posts ViralHunt holds from this community, not from Reddit's own about page.

What is r/COVID19?
r/COVID19 ("COVID-19") describes itself this way: In December 2019, SARS-CoV-2 emerged in the city of Wuhan, China. This subreddit seeks to facilitate scientific discussion of this potential global public health threat. We have very strict rules. Please make sure to read them before posting or commenting. Moderators may lock or remove comments or posts at their discretion. It was founded in 2020 and has 600.5K members.
How many members does r/COVID19 have?
r/COVID19 has about 600.4K members. ViralHunt has tracked 100 of its posts; the biggest reached 18.6K upvotes, which is 31 per 1,000 members.
What is the most viral post on r/COVID19?
"Stanford researchers confirm N95 masks can be sterilized and reused with virtually no loss of filtration efficiency by leaving in oven for 3" reached 18.6K upvotes and 1.1K comments in 2020, the highest score among the posts we hold from r/COVID19.
What subreddits are similar to r/COVID19?
Communities of a comparable size we track: r/popculture, r/ProgressiveHQ, r/Snorkblot, r/Yosemite, r/StarWarsBattlefront, r/WomenInNews.
What kind of posts do best on r/COVID19?
Of the posts we hold, 99% are link posts and 1% are text posts.
When is the best time to post on r/COVID19?
Across 100 timestamped posts we hold, the slots whose posts averaged the highest score are Friday at 03:00 UTC (3.2K avg upvotes), Saturday at 18:00 UTC (2.8K avg upvotes), Friday at 08:00 UTC (2.5K avg upvotes). The busiest day is Monday. For Reddit as a whole, see the best time to post on Reddit page.
How many upvotes does a post need to reach the top of r/COVID19?
The 20th-best post we hold from r/COVID19 has 3K upvotes, so that is roughly the bar for the top twenty.

See what is climbing here before you write

ViralHunt tracks Reddit and eight other networks, records how every post grows, and puts what is taking off in front of your team in one list.

Start free →

Every figure here is what ViralHunt has captured from r/COVID19, not everything the community has ever posted. We deliberately do not publish an average score: our sample is weighted toward a community's best posts, so an average would be flattering and wrong. Peak per 1,000 members is computed the same way for every community listed. See how we measure.