27 Critiques and Evidence Points against a Natural/ Market Origin
#DRASTIC slide for dissemination through all appropriate forums, channels & spaces!
Laboratory Cell Culture Footprints in the SARS-CoV-2 Glycan Shield
Early natural origin arguments claimed that features like the furin cleavage site (FCS) required a living animal’s immune pressure. Later findings have weakened this claim; while the FCS is lost in Vero E6 cells, it is maintained and refined in human respiratory cell lines like Calu-3.Simultaneously, the virus lacks a conserved glycan shield at position N370 due to a T372A mutation. Restoring this glycan locks the spike shut, dropping human lung cell replication over 60-fold. This change, alongside additional spike modifications (such as N519H and NTD glycan remodeling), favors a more open conformation optimized for human airway entry while reducing compatibility with the low-pH bat gut. Pre-2020 laboratory proposals explicitly detailed similar glycan ablations to analyze host-range effects. Crucially, recent phylogenetic modeling (Havens et al., 2026) reveals that the pre-human lineage was evolutionarily silent. This lacks the elevated mutation rates and host-specific adaptative signals observed whenever the virus spills back into secondary mammals like mink and deer. When combining these synchronized structural optimizations with the missing wild selective footprint, the data fits better with laboratory cell-culture passage (Calu-3, HAE), where immunological and gastric constraints are entirely absent, than with an as yet unfound and unknown intermediate animal host.
Assessing the Viability of SARS-COV-2 Research Related Origins
This paper evaluates the structural, documentary, and genomic evidence for the potential laboratory adaptation of SARS-CoV-2, contrasting a synthetic assembly framework against standard natural zoonosis hypotheses. This study reviews claims that exogenous trypsin supplementation and engineered furin cleavage site (FCS) insertions, were utilized to bypass constraints. By analyzing the 2018 DEFUSE proposal alongside published Type IIS restriction enzyme protocols, some claim an explicit research intent to generate human-compatible chimeric backbones. This framework is then validated by recent comparative genomic and metagenomic audits, including the anomalous BsaI/BsmBI endonuclease fingerprint of SARS-CoV-2, the strategic positioning of a BsaXI site at the S1/S2 junction, and the unique pre-pandemic blueprint of the synthetic MERS-MA30 clone. Critically, empirical physical evidence from contaminated pre-pandemic Wuhan sequencing datasets is evaluated, which revealed an unpublicized, fully functional HKU4-related MERS chimeric infectious clone built on a WIV-linked pBAC-CMV vector using Type IIS “No See ‘m” engineering tools. Furthermore, this paper addresses alternative research-related pathways, evaluating how low-containment serial passaging forces human adaptation. This is directly supported by documented WIV protocols utilizing active 2019 pangolin coronavirus inventories, BsmBI cloning platforms, and 34°C upper-respiratory thermal shifts to drive cross-species tropism.
A Critical Examination of Three Related Studies on SARS-CoV-2 Origins
A trio of interlinked studies, MacLean et al. (2021), Pekar et al. (2025), and Havens et al. (2026), has attempted to shape the prevailing zoonotic narrative for SARS-CoV-2 origins, claiming that bat sarbecoviruses evolved a “generalist” virus capable of efficient human transmission without significant pre-zoonotic adaptation or prolonged intermediate hosts. Employing phylogenetic tools (HyPhy, GARD, BEAST, RELAX), these papers infer minimal evolutionary change prior to emergence and attribute geographic gaps to wildlife trade. This critical examination reveals recurring methodological flaws, arbitrary parameter choices, selective data exclusion, unvalidated priors, and underpowered short-branch analyses, alongside interpretive biases that convert phylogenetic silence into affirmative zoonotic evidence. Notable flaws include the exclusion of MERS-CoV as a comparator despite its clear intermediate signals, the undervaluation of synonymous/codon biases that could mask lab optimization, and the absence of simulations testing engineered “minimal adaptation” scenarios. A further tension arises between Pekar et al. (2025), which mandates intermediates to bridge spatial distances, and Havens et al. (2026), which downplays their evolutionary role due to undetectable signals, effectively shifting goalposts from “find the intermediate” to “it was too brief to matter.” Contextual factors, including authors’ prior commitments and documented proposals like DEFUSE, compound these concerns. Collectively, the trilogy reinforces a zoonotic consensus through selective inference rather than conclusive disproof of alternatives.
293 QUESTIONS FOR DR.RALPH BARIC (2025)
Purpose of the updated 293 questions developed by the DRASTIC collective:
To clarify Dr. Baric’s role in U.S.-funded high-risk coronavirus research, his early scientific judgments on SARS-CoV-2 origins, and the decision-making context behind public silence versus later engagement with investigations, as well as links to intelligence agencies.
Proximal Origin — A Tragicomedy of our Times
Key questions are addressed in this book, such as: • Who was really behind the investigative initiative of Jeremy Farrar, of the Wellcome Trust, at the end of January 2020. • Why the tone and conclusions of the Proximal Origin draft changed so much within a week of the confidential investigative call that took place on 1 Feb, organised by Farrar at the suggestion of Anthony Fauci (head of NIAID). • Why the agreed plan to have the WHO onboard the origin question was dropped around the 9 Feb, and never heard of again, despite having the support of the US government. • Why Farrar organised both the publication of Peter Daszak’s Statement of Support and the release of Proximal Origin at a crucial time. • What the position and priorities of the US administration regarding the WHO, and getting access to data and isolates, were. • What the role of Fauci in all of this was, and what he did in support of Farrar but also for his own sake. • Who sent an anonymous letter to Jon Cohen at Science denouncing the Proximal Origin co-authors as impostors, in July 2020, and why.
The EcoHealth Alliance Files – A DRASTIC PRODUCTION
Research by DRASTIC into certain uncovered documents from EcoHealth Alliance
Read the full report here
Important Shortcuts
WIV and Other Researcher Profiles
DRASTIC and the investigative network that broke the Corona laboratory taboo
Pekar et al., (2025) Demolished
The Pangolin (Coronavirus) Papers
The Pangolin (Coronavirus) Papers: Concise Summary
All Pangolin Coronavirus contamination related extracts
BANAL versus PANGOLIN coronaviruses debate
DRASTIC Manifesto on the Proliferation of BSL3 and BSL4 Laboratories worldwide
May 2020 Leaked DIA/NCMI Analysis available here
The DARPA DEFUSE documents are available here
DRASTIC analysis of the DEFUSE documents is here
Simon Wain-Hobson’s analysis is here.
May 2020 Leaked DIA/NCMI Analysis “An Argument Against Natural Covid-19 Creation”
Just Leaked May 2020 Intel Analysis!
One of the authors is DARPA’s Jean-Paul Chretien https://twitter.com/NatSecBio
Full Bio in a thread here: https://twitter.com/BillyBostickson/status/1456289256092037124
Here is a local copy of “An Argument Against Natural Covid-19 Creation”
as the original one is now password protected.
Recent Papers authored/co-authored by D.R.A.S.T.I.C. Members
Recent Media References
Le Monde
Covid-19: How a group of amateur investigators pushed the lab-leak theory
Berliner Zeitung
“We are not a cult”
DRASTIC and the investigative network that broke the Corona laboratory taboo
CNN
Newsweek
India First
Neue Zürcher Zeitung
CNET
UnHerd
20 Minutes
Sky News
El Imparcial
Envoyé spécial
VIDEO. Covid-19 : enquête sur le mystère des origines d’une pandémie mondiale
The Sun (UK)
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The Furin Cleavage Site Part 1: Nexus
Interesting Analysis by “Dogs Breakfast”
SARS-CoV-2’s closest relative, RaTG13, was generated from a bat transcriptome not a fecal swab: implications for the origin of COVID-19
By Steven E MasseystevenEmassey@gmail.comDepartment of Biology, University of Puerto Rico – Rio Piedras,San Juan, Puerto Rico 00901 This new paper by @stevenemassey is now available to download here This version 2 will soon to be published on Researchgate and Arxiv The three introductory threads can be viewed here: Evidence for ‘live’ RaTG13 at WIV Part…
DRASTIC KEY BREAKTHROUGHS RESEARCH and ACHIEVEMENTS
This document lists 53 key breakthroughs, research publications and achievements of DRASTIC and its members since early 2020. It also lists newspaper articles, documentaries and books about DRASTIC. Theres is some information on working groups and how we communicate. Finally, the genesis of DRASTIC is explained.
Laboratory Hypothesis Leak Overview Guest Post by Andrew Tuntable, Ph. D. atuntable@gmail.com @atuntable DRASTIC and other groups have uncovered substantial evidence that the Covid-19 pandemic was caused by the leak of the virus from a laboratory in Wuhan. This evidence together with many references is described in this paper: SARS-COV-2 Laboratory Leak Hypothesis In summary,…
SARS-COV-2 Laboratory Leak Hypothesis Guest Post by Andrew Tuntable, Ph. D. Email: atuntable@gmail.com Twitter: @atuntable SARS-COV-2 Laboratory Leak Hypothesis The Lab Leak Hypothesis The Importance of the Hypothesis Beyond Reasonable Doubt Summary of the Evidence Geography Natural precursors Laboratory Leaks Chimera Furin Cleavage Site 2013 Sick Bat Guano Miners Database Removal and Obfuscation Sick WIV…
New Analysis of DEFUSE Proposal
Analysis of the DARPA DEFUSE Proposal by Professor Simon Wain-Hobson Annotated Version of the DARPA DEFUSE Proposal by Professor Simon Wain-Hobson Professor Simon Wain-Hobson kindly provides us with his personal analysis of the DARPA DEFUSE leaked documents, as well as an annotated version of the main proposal document, highlighting significant issues. Simon Wain-Hobson is a…
Pangolins
Cloning vectors and contamination in metagenomic datasets raise concerns over pangolin CoV genome authenticity https://arxiv.org/abs/2108.08163 Adrian Jones, Daoyu Zhang, Yuri Deigin, Steven C. Quay
The Lancet
An appeal for an objective, open, and transparent scientific debate about the origin of SARS-CoV-2 (co-authored by Rossana Segreto) https://www.thelancet.com/journals/lancet/article/PIIS0140-6736(21)02019-5/fulltext?rss%3Dyes#%20
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