Meta acknowledged in a statement to The Washington Post that Threads is intentionally blocking the search terms and said that other terms are being blocked, but the company declined to provide a list of them. A search by The Post discovered that the words “sex,” “nude,” “gore,” “porn,” “coronavirus,” “vaccines” and “vaccination” are also among blocked words.
“The search functionality temporarily doesn’t provide results for keywords that may show potentially sensitive content,” the statement said, adding that the company will add search functionality for terms only “once we are confident in the quality of the results.”
Lucky Tran, director of science communication at Columbia University, discovered this himself when he attempted to use Threads to seek out research related to covid, something he says he does every day. “I was excited by search [on Threads],” he said. “When I typed in covid, I came up with no search results.”
Other public health workers criticized the company’s decision and said its timing was especially poor, given the current coronavirus uptick. Hospitalizations jumped nearly 16 percent in the United States last week and have been rising steadily since July, according to CDC data, though they remain less than what they were for the comparable week a year ago. Deaths are less than a quarter of what they were year to year, CDC statistics show.
(OP: Sorry, paywall, can’t find another source yet. Someone got an archive?)
I’m gonna defend meta here so hold with me for a bit.
Moderating bad actors is now impossible. They can, and do, produce so much content that any level of moderation is too expensive; even for meta. The scale of idiots to non idiots is biased heavily towards idiots. A slightly different version of “a lie can travel around the world before the truth gets their pants on”.
Meta, Twitter, google, will not save us from the bad actors. Even if they committed millions to the effort. Nor are they willing to risk litigation from the idiots in the GOP. So guess what? The only sustainable practice for them is to block.
The fact that this will prevent dissemination of legit info from the government and professionals is a problem society created by falling into the tolerance “paradox” trap.
I’d like to believe that Meta is acting in good faith, as you seem to be assuming, but given their history, I just am not willing to put any faith in that.  And I’m certainly not alone in feeling that way. 
That’s fair!
My intention was not to assume good or bad. Their, and other big tech companies, motivations do not matter for the end result to be wrong.
Likewise: Groups of good people, acting in good faith, can still produce bad systems.
I apologize if it sounded like I was maligning you or implied you were being naive; you were simply stating facts, but Meta’s profit motive, combined with their history, in my opinion, negates any assumption or even a consideration of them acting in good faith until proven otherwise.
Because they loose profits- these bad actors generate ad revenue as well as drive engagement and clicks.
They like to pretend their the new public square- it’s well past time to realize they’re not and force them to accountability
In one way this is a great benefit of Twitter going down. Really demonstrated how they cannot be the public square.
Yes. But they have no defense for “we can’t moderate”- they created this mess. They allowed it to fester, and it’s past time for them to do something about it… or to get fucked.
But saying the platforms themselves have no blame in this, it’s all those trolls, ignores the fact that they could very easily deal with it.
They don’t because it’s revenue.
Regardless of their intent, if it means people don’t use social media to get their information on topics like this, I’m okay with it.