Ralph S. Baric
Professor of Epidemiology, UNC Chapel Hill
Engagement
| Authored | 561 |
| Substantive (25+ words) | 180 |
| Threads posted in | 2 |
| Distinct active days | 3 |
| Words authored | 16,724 |
| Received (incl. group broadcast) | 601 |
Received counts include every message sent to a channel this
person belonged to. That measures presence, not participation.
Statements
- 66 own voice
- 22 need context
- 27 quoted / not their view
115 sentences were extracted and attributed
to this person. Most are not their own opinion. Reporting the total as
“115 statements” would misrepresent them.
Correspondents
Topics
Appears in
Statement record
Showing:
own voice, substantive
needs context
quoted / not their view
all
2020-01-29
own voice, substantive
speaker_own · asserts · email
To ce Subject: RE: B Group Next Week Attachments: Baric BSEG Jan 2020.pptx My presentation a eel Sent: Thursday, January 23, 2020 3:16 PM -- Ci Subject: Re: B Group Next Week Hi Ralph, The Sponsor will be excited to hear that you are willing to lead this timely and important discussion.
Chairman Paul Letter to DNI Gabbard, p.7 · original PDF
· in context
2026-04-10
own voice, substantive
speaker_own · asserts · transcript segment
Nothing comes to mind, but if you have questions on that testimony I'll be glad to give you my current thinking.
Baric Transcribed Interview (Redacted), p.12 · original PDF
· in context
2026-04-10
own voice, substantive
speaker_own · asserts · transcript segment
We had an mRNA vaccine for MERS coronavirus that had been tested in mice, both young and DC.Scheduling@LexitasLegal.com old mice, and it was extremely effective.
Baric Transcribed Interview (Redacted), p.14 · original PDF
· in context
2026-04-10
own voice, substantive
speaker_own · asserts · transcript segment
But when you took them into aged animals, where the vaccines are less affected by about tenfold, the vaccines would fail.
Baric Transcribed Interview (Redacted), p.14 · original PDF
· in context
2026-04-10
own voice, substantive
speaker_own · asserts · transcript segment
And the beauty about the VRC mRNA vaccine was that the neutralizing titers in the immune responses were as effective in the old animals as the young animals, so they were fully protected.
Baric Transcribed Interview (Redacted), p.14 · original PDF
· in context
2026-04-10
own voice, substantive
speaker_own · asserts · transcript segment
Whether they actually manufactured the vaccine that was put in the animals or not, or whether NIH made that vaccine and put it in, I don't know.
Baric Transcribed Interview (Redacted), p.15 · original PDF
· in context
2026-04-10
own voice, substantive
speaker_own · asserts · transcript segment
In 2003, the NIH had purchased two, or the Federal Government had purchased two $20 million killed vaccines to test against SARS coronavirus.
Baric Transcribed Interview (Redacted), p.16 · original PDF
· in context
2026-04-10
own voice, substantive
speaker_own · asserts · transcript segment
We did a head-to-head comparison of remdesivir versus this drug, and had submitted it to Nature Communications for publication.
Baric Transcribed Interview (Redacted), p.21 · original PDF
· in context
2026-04-10
own voice, substantive
speaker_own · asserts · transcript segment
We had common interests, but we didn't effectively start working together until later in 2014, on some of the work on the 2015 paper, that was published in Nature Medicine.
Baric Transcribed Interview (Redacted), p.22 · original PDF
· in context
2026-04-10
own voice, substantive
speaker_own · asserts · transcript segment
Ian Lipkin, you'd have to look at his CV, but I believe he received a medal from China for his efforts in the original 2003 SARS coronavirus outbreak, helping them bring it under control.
Baric Transcribed Interview (Redacted), p.23 · original PDF
· in context
2026-04-10
own voice, substantive
speaker_own · asserts · transcript segment
She was able to culture WIV1 in cell culture, and they published a paper in Nature on that.
Baric Transcribed Interview (Redacted), p.24 · original PDF
· in context
2026-04-10
own voice, substantive
speaker_own · asserts · transcript segment
And they showed that WIV1 could infect and use human H2 receptors.
Baric Transcribed Interview (Redacted), p.24 · original PDF
· in context
2026-04-10
own voice, substantive
speaker_own · asserts · transcript segment
So in China there was a massive social media barrage of speculation that the 2015 virus was the cause of the pandemic.
Baric Transcribed Interview (Redacted), p.32 · original PDF
· in context
2026-04-10
own voice, substantive
speaker_own · asserts · transcript segment
Initially it came from the Chinese, social media speculation about what was the cause of the pandemic.
Baric Transcribed Interview (Redacted), p.33 · original PDF
· in context
2026-04-10
own voice, substantive
speaker_own · asserts · transcript segment
So there's no way it could ever be associated with the emergence of this virus.
Baric Transcribed Interview (Redacted), p.33 · original PDF
· in context
2026-04-10
own voice, substantive
speaker_own · asserts · transcript segment
I sort of told them why we felt that the data didn't demonstrate a gain-of-function phenotype, and that was because there was no change or increased replication of the virus in human DC.Scheduling@LexitasLegal.com cells.
Baric Transcribed Interview (Redacted), p.33 · original PDF
· in context
2026-04-10
own voice, substantive
speaker_own · asserts · transcript segment
So the details of the discussion about what's gain-of-function or what's not is dependent on NIH.
Baric Transcribed Interview (Redacted), p.51 · original PDF
· in context
2026-04-10
own voice, substantive
speaker_own · asserts · transcript segment
All I know is that the Trump administration has formed a committee to come up with final policy recommendations for what is gain-of-function and what's not.
Baric Transcribed Interview (Redacted), p.53 · original PDF
· in context
2026-04-10
own voice, substantive
speaker_own · asserts · transcript segment
Yeah, he was certainly a member early on, and early on in BSEG they actually encouraged people to put their membership on that committee.
Baric Transcribed Interview (Redacted), p.60 · original PDF
· in context
2026-04-10
own voice, substantive
speaker_own · asserts · transcript segment
And the reason that is, is that they've published papers saying that they did their work at BSL-2.
Baric Transcribed Interview (Redacted), p.67 · original PDF
· in context
2026-04-10
own voice, substantive
speaker_own · asserts · transcript segment
So there are many more laboratory-acquired infections at BSL-2 than at BSL-3.
Baric Transcribed Interview (Redacted), p.67 · original PDF
· in context
2026-04-10
own voice, substantive
speaker_own · asserts · transcript segment
And so if you're working with viruses than use human receptors and growing human cells, and you're doing it at BSL-2, you DC.Scheduling@LexitasLegal.com cannot ever conclusively say that there was not a laboratory leak.
Baric Transcribed Interview (Redacted), p.67 · original PDF
· in context
2026-04-10
own voice, substantive
speaker_own · asserts · transcript segment
So if an ODNI member was there, there may have been more members from other intelligence groups there, as well, but they wouldn't have risen to my level of attention.
Baric Transcribed Interview (Redacted), p.72 · original PDF
· in context
2026-04-10
own voice, substantive
speaker_own · asserts · transcript segment
I mean, National Academy does a lot of work with the Federal Government, so they could do much more sensitive research with different DC.Scheduling@LexitasLegal.com members of the intelligence community and different groups.
Baric Transcribed Interview (Redacted), p.72 · original PDF
· in context
2026-04-10
own voice, substantive
speaker_own · asserts · transcript segment
There was a rumor that a pangolin virus existed with 100 percent identity, or close to 100 percent identity to SARS-2.
Baric Transcribed Interview (Redacted), p.78 · original PDF
· in context
2026-04-10
own voice, substantive
speaker_own · asserts · transcript segment
That turned out not to be true, as the pangolin, called the pangolin GD strain, which was about 90 percent identical, I believe, is the virus they were talking about.
Baric Transcribed Interview (Redacted), p.78 · original PDF
· in context
2026-04-10
own voice, substantive
speaker_own · asserts · transcript segment
It has a receptor binding domain that is almost identical, nearly identical to SARS-2, but it does have a couple point mutations in it.
Baric Transcribed Interview (Redacted), p.78 · original PDF
· in context
2026-04-10
own voice, substantive
speaker_own · asserts · transcript segment
BANAL-52 and BANAL-1-something or another, also had receptor binding domains that were virtually identical to SARS-2.
Baric Transcribed Interview (Redacted), p.79 · original PDF
· in context
2026-04-10
own voice, substantive
speaker_own · asserts · transcript segment
So there's two bad viruses and pangolin virus within the clade, within that branch of SARS-2 that had identical receptor binding domains, which means that it's not engineered.
Baric Transcribed Interview (Redacted), p.79 · original PDF
· in context
2026-04-10
own voice, substantive
speaker_own · asserts · transcript segment
In fact, the whole genesis around the pangolin strains, these pangolin strains, is confusing because the group that published first had one sequence.
Baric Transcribed Interview (Redacted), p.80 · original PDF
· in context
2026-04-10
own voice, substantive
speaker_own · asserts · transcript segment
And then, if I understand it correctly, those sequences and samples were picked up, I believe, by WIV researchers, or another group, and they published a completely different set of sequences.
Baric Transcribed Interview (Redacted), p.80 · original PDF
· in context
2026-04-10
own voice, substantive
speaker_own · asserts · transcript segment
And WIV1, they would take spike genes of other sarbecos and drop it into that clone because they had a difficult time making more clones.
Baric Transcribed Interview (Redacted), p.83 · original PDF
· in context
2026-04-10
own voice, substantive
speaker_own · asserts · transcript segment
So for a pan-coronavirus vaccine you have pan-coronavirus beta coronavirus vaccines and alpha coronavirus vaccines.
Baric Transcribed Interview (Redacted), p.84 · original PDF
· in context
2026-04-10
own voice, substantive
speaker_own · asserts · transcript segment
So the only thing that people have really worked on extensively are pan-beta coronavirus vaccines, focused heavily on SARS coronavirus and MERS coronavirus.
Baric Transcribed Interview (Redacted), p.84 · original PDF
· in context
2026-04-10
own voice, substantive
speaker_own · asserts · transcript segment
Now, for pan-alpha coronavirus vaccines, the classic human coronaviruses are 229E and LN63.
Baric Transcribed Interview (Redacted), p.84 · original PDF
· in context
2026-04-10
own voice, substantive
speaker_own · asserts · transcript segment
Linda Saif has swine models, gnotobiotic swine models that she can study viral pathogenesis and vaccine DC.Scheduling@LexitasLegal.com performance.
Baric Transcribed Interview (Redacted), p.85 · original PDF
· in context
2026-04-10
own voice, substantive
speaker_own · asserts · transcript segment
Now, if you want to know, down to the nucleotide level, what drives a cross-species jumping event, you are talking gain-of-function experiments.
Baric Transcribed Interview (Redacted), p.91 · original PDF
· in context
2026-04-10
own voice, substantive
speaker_own · asserts · transcript segment
They mention in there that this could involve gain-of-function research in their announcement.
Baric Transcribed Interview (Redacted), p.92 · original PDF
· in context
2026-04-10
own voice, substantive
speaker_own · asserts · transcript segment
There should be sarbecos out there that have furin cleavage sites, so they were going to look for them.
Baric Transcribed Interview (Redacted), p.92 · original PDF
· in context
2026-04-10
own voice, substantive
speaker_own · asserts · transcript segment
They would introduce changes into the receptor binding domain and look in the context of those pseudotypes, which is the safe system, to ask questions about what the role of those mutations were in tropism and entry of viruses in receptor usage.
Baric Transcribed Interview (Redacted), p.92 · original PDF
· in context
2026-04-10
own voice, substantive
speaker_own · asserts · transcript segment
Following gleaning that data, we would then use a zoonotic sarbecovirus as a receptacle to drop the spike genes of some of these viruses, and if we found one with full-on furin site we would put it in there and evaluate its biology.
Baric Transcribed Interview (Redacted), p.92 · original PDF
· in context
2026-04-10
own voice, substantive
speaker_own · asserts · transcript segment
We would also remove that furin cleavage site and ask what the effect was on pathogenesis in replication.
Baric Transcribed Interview (Redacted), p.92 · original PDF
· in context
2026-04-10
own voice, substantive
speaker_own · asserts · transcript segment
At the end of that there was speculation that if the furin cleavage site looked like it was having effect on replication of pathogenesis we would consider putting it into a gain-of-function scenario where we would drop it into a null backbone.
Baric Transcribed Interview (Redacted), p.92 · original PDF
· in context
2026-04-10
own voice, substantive
speaker_own · asserts · transcript segment
And my interpretation of that was gain-of-function, and they discuss gain-of-function.
Baric Transcribed Interview (Redacted), p.95 · original PDF
· in context
2026-04-10
own voice, substantive
speaker_own · asserts · transcript segment
Now, I found it very interesting that the letter that they provided shortly thereafter said that the experiments were DURC.
Baric Transcribed Interview (Redacted), p.95 · original PDF
· in context
2026-04-10
own voice, substantive
speaker_own · asserts · transcript segment
DURC is Dual-Use Research of Concern. involving 15 pathogens, none of which is a coronavirus.
Baric Transcribed Interview (Redacted), p.95 · original PDF
· in context
2026-04-10
own voice, substantive
speaker_own · asserts · transcript segment
Yeah, that was part of it, but the Michigan group also had a vaccine vector where we would put in viral antigens to try to immunize the bats.
Baric Transcribed Interview (Redacted), p.97 · original PDF
· in context
2026-04-10
own voice, substantive
speaker_own · asserts · transcript segment
So if you go back to the NSABB P3CO regulations, the regulations state that viruses, like flu, SARS, and MERS coronavirus, are highly pathogenic viruses, and highly transmissible viruses are covered by this program.
Baric Transcribed Interview (Redacted), p.100 · original PDF
· in context
2026-04-10
own voice, substantive
speaker_own · asserts · transcript segment
And if you do anything on these particular viruses that are highly pathogenic or highly transmissible, and you do any manipulation to increase that, then that's considered gain-of-function and regulated by those documents, based on my read of them.
Baric Transcribed Interview (Redacted), p.100 · original PDF
· in context
2026-04-10
own voice, substantive
speaker_own · asserts · transcript segment
The first is that if you work with zoonotic viruses, like WIV1, which has never been show to infect a human being, that has never shown to be transmissible in humans, it is not subject to the gain-of18 function regulatory framework.
Baric Transcribed Interview (Redacted), p.100 · original PDF
· in context
2026-04-10
own voice, substantive
speaker_own · asserts · transcript segment
Now, if I remember correctly there is one sentence in there somewhere that says that we will consider potentially moving spike gene, or furin cleavage site into SARS coronavirus.
Baric Transcribed Interview (Redacted), p.101 · original PDF
· in context
2026-04-10
own voice, substantive
speaker_own · asserts · transcript segment
You know, we're talking about eight steps down the line, where you gain a significant amount of data about the role of each spike, its ability to use different DC.Scheduling@LexitasLegal.com receptors, and the role of the furin cleavage site in the ability of that virus to replicate and cause disease, before you do anything about moving it into another strain.
Baric Transcribed Interview (Redacted), p.101 · original PDF
· in context
2026-04-10
own voice, substantive
speaker_own · asserts · transcript segment
So remember, one of those DC.Scheduling@LexitasLegal.com experiments was to take the virus that had the furin cleavage site in it, resurrect that virus, put it in animals, see what the effect was.
Baric Transcribed Interview (Redacted), p.103 · original PDF
· in context
2026-04-10
own voice, substantive
speaker_own · asserts · transcript segment
But I don't believe that, at least from the U.S. side, I don't believe there was any grant written, that I'm on, where we proposed to do experiments of furin cleavage sites.
Baric Transcribed Interview (Redacted), p.105 · original PDF
· in context
2026-04-10
own voice, substantive
speaker_own · asserts · transcript segment
My focuses, at the time, were to rapidly develop mouse models so that we could test mRNA-LNP-based vaccines against SARS-2, to work with Gilead to get their drug forward into clinical trials, to get molnupiravir, a second drug that was FDA approved for use in humans, into clinical trials.
Baric Transcribed Interview (Redacted), p.107 · original PDF
· in context
2026-04-10
own voice, substantive
speaker_own · asserts · transcript segment
A commentary piece that was published in Immunity, May 2020, that stated, equivocally, DC.Scheduling@LexitasLegal.com that it is unlikely that the lab leak hypothesis will go away because the safety procedures at the WIV, and I cited their paper where they worked with viruses at BSL-2.
Baric Transcribed Interview (Redacted), p.110 · original PDF
· in context
2026-04-10
own voice, substantive
speaker_own · asserts · transcript segment
It's the longest-running natural infection cohort on dengue virus, which has identified a large number of important features associated with what drives pathogenesis, and has informed the vaccine development.
Baric Transcribed Interview (Redacted), p.114 · original PDF
· in context
2026-04-10
own voice, substantive
speaker_own · asserts · transcript segment
It's called pangolin coronavirus GD strain, and it was published in Nature Microbiology.
Baric Transcribed Interview (Redacted), p.118 · original PDF
· in context
2026-04-10
own voice, substantive
speaker_own · acknowledges · transcript segment
So we provided that, and we also put the WIV1 sequence up in PubMed and they analyzed that sequence and agreed that it was not the cause of the pandemic.
Baric Transcribed Interview (Redacted), p.124 · original PDF
· in context
2026-04-10
own voice, substantive
speaker_own · asserts · transcript segment
And so in this case, Fang Li had been doing studies using biochemical approaches to identify DC.Scheduling@LexitasLegal.com the most optimal receptor binding domain possible to grab either the human ACE2 receptor or the mouse ACE2 receptor.
Baric Transcribed Interview (Redacted), p.124 · original PDF
· in context
2026-04-10
own voice, substantive
speaker_own · asserts · transcript segment
Yeah, if you have an email that suggested I did, I'd appreciate it, because I don't want to be put in the scenario where you're asking me to recall an event from 13 years back, and then I state it incorrectly.
Baric Transcribed Interview (Redacted), p.127 · original PDF
· in context
2026-04-10
own voice, substantive
speaker_own · asserts · transcript segment
So basically there's a massive inflammatory response that has the potential to be lifethreatening, and the SARS coronavirus vaccines, from 2003, that the NIH had purchased, were both adjuvanted with alum.
Baric Transcribed Interview (Redacted), p.129 · original PDF
· in context
2026-04-10
own voice, substantive
speaker_own · asserts · transcript segment
So my concern, and I expressed this to the WHO and to other groups, was that we needed to look carefully for vaccine-induced immune pathology.
Baric Transcribed Interview (Redacted), p.129 · original PDF
· in context
2026-04-10
own voice, substantive
speaker_own · asserts · transcript segment
That was one of the experiments we set up to do, where we took mRNA vaccines and we took killed vaccine preparations with alum and compared them head-to-head for the ability to induced Th2 responses.
Baric Transcribed Interview (Redacted), p.129 · original PDF
· in context
2026-04-10
own voice, substantive
speaker_own · asserts · transcript segment
The mRNA vaccines, though, were tested for that using homologous virus challenge.
Baric Transcribed Interview (Redacted), p.129 · original PDF
· in context
2026-04-10
own voice, substantive
speaker_own · asserts · transcript segment
At that point, the downstream question is whether if you have significant amounts of virus variation and you're infecting the original Wuhan mRNA vaccine, will breakthrough infection induce an immune pathology phenotype, and those are the kinds of things we're interested in studying now.
Baric Transcribed Interview (Redacted), p.130 · original PDF
· in context