Monday, January 4, 2021

What I believe about COVID


By Denis G. Rancourt, PhD

Researcher, Ontario Civil Liberties Association (

Member scientist, PANDA (

[ See section about the author’s expertise, at the end ]

Opinion/Belief (not submitted for journal publication)

This is purely my personal beliefs. I do not speak on behalf of OCLA or PANDA.

4 January 2021

At this time, I hold the following beliefs about COVID.

In 2020, no respiratory disease virus or viruses (the postulated SARS-CoV-2 included) caused any anomaly (total or incremental) in all-cause mortality.

All-cause mortality by month, week or day has the clear signature of localized mass deaths caused by the measures purportedly intended to reduce transmission (response-induced deaths).

The said signature of response-induced deaths, in all-cause mortality, includes: 

i. Global synchronicity of sudden onsets immediately following the 11 March 2020 WHO declaration of a pandemic and recommendation to “prepare your hospitals”. 

ii. Unprecedented lateness in the seasonal cycle of the sudden onsets. 

iii. Extreme granularity of the intensities of the sudden onsets, from jurisdiction to jurisdiction, from zero to very large, down to regional levels.

Unprecedented tight lockdowns of care homes, following transfers from hospitals of sick and infected patients, caused deadly epidemics in care homes.

Deadly epidemics in care homes in themselves are not new, and have been amply documented in the pre-2020 scientific literature.

Many respiratory disease viruses acted concomitantly in 2020, in association with bacterial pneumonias, as is always the case in heightened winter-season transmission and infection.

Assignment of cause of death as being due to SARS-CoV-2 is worthless. It is pure propaganda enabled by captured institutions.

No certified uncontaminated samples of the purported pathogen (SARS-CoV-2) were or are available for scientific study and biotech development. The genetic sequence was concocted in the absence of a purified sample of the presumed pathogen, using indirect methods. 

The RT-PCR test that was devised for COVID-19 has no clinical or epidemiological value whatsoever. It is one of the greatest scandals in public health history.

The USA is a special case because it has a large population that is particularly vulnerable to great harm from large-scale societal measures. Relevant factors include: obesity, poverty, social class oppression, precarious workforce, substandard universal health care, high social tensions, large income disparity, large homeless and working poor underclasses, aggressive Big Pharma capture, high seasonal vaccination rate, high pharma and illegal drug use, high density of atomized or socially isolated individuals, poor nutrition, low physical activity rates, high rate of psychological depression, high rates of built environment air-conditioning without ventilation, and so on.

Transmission of viral respiratory diseases is not by contact. It is overwhelmingly by aerosol particles in air. Surface cleaning and hand washing are virtually useless for slowing transmission.

Masks do not work to reduce transmission, and cause significant harm to school children, and to society.

The magical “one way mask”, which does not protect the wearer but acts as “source control”, is an invention for propaganda. It is contrary to the physics of breathing aerosol particles suspended in the fluid air. It is a ridiculous fantasy.

Vaccine trials funded, run, documented, and reported by Big Pharma are at best untrustworthy. They should not be allowed, and they are probably falsified. 

Vaccines for seasonal viral respiratory diseases are a bad idea. They are dangerous, harmful, and unnecessary. They are driven by profit, not by actual public health.

By far, the main determinants of disease severity for seasonal viral respiratory diseases are: psychological stress, social isolation, individual health status, obesity, and immunological history (including vaccination challenges). 

My competence to develop beliefs about COVID

Links to my articles about COVID are listed here: 

I am retired and a former tenured Full Professor of Physics, University of Ottawa. Full Professor is the highest academic rank. During my 23-year career as a university professor, I developed new courses and taught over 2000 university students, at all levels, and in three different faculties (Science, Engineering, Arts).  I supervised more than 80 junior research terms or degrees at all levels from post-doctoral fellow to graduate students to NSERC undergraduate researchers.  I headed an internationally recognized interdisciplinary research laboratory, and attracted significant research funding for two decades.  

I have been an invited plenary, keynote, or special session speaker at major scientific conferences some 40 times. I have published over 100 research papers in leading peer-reviewed scientific journals, in the areas of physics, chemistry, geology, bio-geochemistry, measurement science, soil science, and environmental science. 

My scientific h-index impact factor is 40, and my articles have been cited more than 5,000 times in peer-reviewed scientific journals (profile at Google Scholar: ).

My personal knowledge and ability to evaluate the facts in this article are grounded in my education, research, training and experience, as follows:

i. Regarding environmental nanoparticles.  Viral respiratory diseases are transmitted by the smallest size-fraction of virion-laden aerosol particles, which are reactive environmental nanoparticles. Therefore, the chemical and physical stabilities and transport properties of these aerosol particles are the foundation of the dominant contagion mechanism through air.  My extensive work on reactive environmental nanoparticles is internationally recognized, and includes: precipitation and growth, surface reactivity, agglomeration, surface charging, phase transformation, settling and sedimentation, and reactive dissolution.  In addition, I have taught the relevant fluid dynamics (air is a compressible fluid), and gravitational settling at the university level, and I have done industrial-application research on the technology of filtration (face masks are filters). 

ii. Regarding molecular science, molecular dynamics, and surface complexation.  I am an expert in molecular structures, reactions, and dynamics, including molecular complexation to biotic and abiotic surfaces. These processes are the basis of viral attachment, antigen attachment, molecular replication, attachment to mask fibers, particle charging, loss and growth in aerosol particles, and all such phenomena involved in viral transmission and infection, and in protection measures. I taught quantum mechanics at the advanced university level for many years, which is the fundamental theory of atoms, molecules and substances; and in my published research I developed X-ray diffraction theory and methodology for characterizing small material particles. 

iii. Regarding statistical analysis methods. Statistical analysis of scientific studies, including robust error propagation analysis and robust estimates of bias, sets the limit of what reliably can be inferred from any observational study, including randomized controlled trials in medicine, and including field measurements during epidemics.  I am an expert in error analysis and statistical analysis of complex data, at the research level in many areas of science. Statistical analysis methods are the basis of medical research.

iv. Regarding mathematical modelling.  Much of epidemiology is based on mathematical models of disease transmission and evolution in the population. I have research-level knowledge and experience with predictive and exploratory mathematical models and simulation methods. I have expert knowledge related to parameter uncertainties and parameter dependencies in such models.  I have made extensive simulations of epidemiological dynamics, using standard compartmental models (SIR, MSIR) and new models. 

v. Regarding measurement methods.  In science there are five main categories of measurement methods: (1) spectroscopy (including nuclear, electronic and vibrational spectroscopies), (2) imaging (including optical and electron microscopies, and resonance imaging), (3) diffraction (including X-ray and neutron diffractions, used to elaborate molecular, defect and magnetic structures), (4) transport measurements (including reaction rates, energy transfers, and conductivities), and (5) physical property measurements (including specific density, thermal capacities, stress response, material fatigue…).  I have taught these measurement methods in an interdisciplinary graduate course that I developed and gave to graduate (M.Sc. and Ph.D.) students of physics, biology, chemistry, geology, and engineering for many years. I have made fundamental discoveries and advances in areas of spectroscopy, diffraction, magnetometry, and microscopy, which have been published in leading scientific journals and presented at international conferences.  I know measurement science, the basis of all sciences, at the highest level.

Wednesday, July 15, 2020

LINKS to Denis Rancourt articles and interviews about COVID-19 and face masks

  • Masks Don't Work: a Review of Science Relevant to Covid-19 Social Policy

Originally published on ResearchGate on 11 April 2020

en francais:
in Spanish:

  • Criticism of Government Response to COVID-19 in Canada

OCLA Report 2020-1 | 18 April 2020

en francais:

  • All-cause mortality during COVID-19: No plague and a likely signature of mass homicide by government response

2 June 2020 | DOI: 10.13140/RG.2.2.24350.77125

en francais:

  • OCLA Asks WHO to Retract Recommendation Advising Use of Face Masks in General Population

21 June 2020

en francais:

  • Face masks, lies, damn lies, and public health officials: "A growing body of evidence"

3 August 2020

en francais:
  • Still No Conclusive Evidence Justifying Mandatory Masks
(Editor defends my work on masks) 12 August 2020

  • Evaluation of the virulence of SARS-CoV-2 in France, from all-cause mortality 1946-2020
20 August 2020
en francais:

  • The Great VIRAL Debate: Dr Rancourt’s Closing Statement
10 November 2020

  • Measures do not prevent deaths, transmission is not by contact, masks provide no benefit, vaccines are inherently dangerous: Review update of recent science relevant to COVID-19 policy

28 December 2020 (now deplatformed!)

Also published by PANDA:

en francais...

Friday, June 5, 2020

COVID censorship at ResearchGate: Things scientists cannot say

Please download the PDF of this article, using the right-column button here:

Denis G. Rancourt, PhD
Researcher, Ontario Civil Liberties Association (

5 June 2020

My April 2020 article entitled “Masks Don’t Work: A review of science relevant to COVID-19 social policy” was banned from ResearchGate on 3 June 2020, after it had reached an unprecedented 400 K reads on the site.

One reader archived the page on 31 May 2020, prior to ResearchGate’s censorship:

The summary/abstract of the article reads:

Masks and respirators do not work.
There have been extensive randomized controlled trial (RCT) studies, and meta-analysis reviews of RCT studies, which all show that masks and respirators do not work to prevent respiratory influenza-like illnesses, or respiratory illnesses believed to be transmitted by droplets and aerosol particles.
Furthermore, the relevant known physics and biology, which I review, are such that masks and respirators should not work. It would be a paradox if masks and respirators worked, given what we know about viral respiratory diseases: The main transmission path is long-residence-time aerosol particles (< 2.5 μm), which are too fine to be blocked, and the minimum-infective-dose is smaller than one aerosol particle.
The present paper about masks illustrates the degree to which governments, the mainstream media, and institutional propagandists can decide to operate in a science vacuum, or select only incomplete science that serves their interests.  Such recklessness is also certainly the case with the current global lockdown of over 1 billion people, an unprecedented experiment in medical and political history.

This is the email I received: [pic]

In particular, the email states:

“[O]ur Terms of Service prohibit the posting of non-scientific content on the platform. Given its questionable scientific basis and controversial subject matter, the content you posted is a violation of our Terms.”

I sent the following response to the two Managing Directors of ResearchGate: [pic]

In particular, I said:

“It is inconceivable to me how the article could have been judged to be "non-scientific content", and I find nothing in the TOS about "questionable scientific basis" (I would hope that all submissions are "questionable") or "controversial subject matter" (I would hope that some science communications are about "controversial subject matter").”

I received this remarkable response from Drs. Madisch and Hofmayer, which is contrary to ResearchGate’s earlier pretext for banning the article: [pic]

To be clear, they state:

“However, if we have any reason to believe that content on our platform has the potential to cause harm, then we reserve the right to remove it. In this case, your report was advocating that face masks are not effective and, in effect, discouraging their use. This goes against the public health advice and/or requirements of credible agencies and governments. As content which did not appear to have undergone quality control processes by the scientific community, but which was broadly linked to from a variety of social media accounts, we thought it had the potential to cause harm.”

This means that they are stating that they judge my article — which argues that there is no scientific basis for public use of masks, a position in line with express longstanding statements made by the WHO [footnote]  — to be a threat to human safety because it “was broadly linked to from a variety of social media accounts”.

In my opinion, their statement is a strategic statement to deflect a possible litigation, and to attempt to secure popular support. Their action is a violation of the Terms of Service (TOS), but they don’t care.

This is censorship of my scientific work like I have never experienced before. It deprives me of the advantages of the ResearchGate platform. It also kills the many links to the article, from a multitude of media and social-media venues. As such, it infringes on the public’s right to freely access information in a democracy, without undue or illegal interference.

The actions of ResearchGate are contrary to science, freedom, and democracy.  In my opinion, ResearchGate is using the public internet infrastructure, while actuating an apparent bias aligned with its funding sources. [footnote]

Wednesday, June 3, 2020

COVID-19 face mask and the yellow-star badge

The state (Canada) is using its resources (propaganda, enforcement, "education") to in-effect mark individuals who visibly refuse to wear masks: as selfish rogues who harm society and put everyone at risk.

The state is barring these citizens from essential services and employment, making them into second-class people.

Is that so different from the yellow-star badge of the Nazis? "The star was intended to humiliate Jews and to mark them out for segregation and discrimination." The inferiority and moral defectiveness of Jews was a "scientific fact" at the time.

How far is the state going to go?

Meanwhile my detailed scientific work reviewing the science that masks do not work is aggressively being censored.

Even the corrupt WHO expressly does not recommend the public use of masks and expressly states that there is no scientific basis for any public use of masks.

Yet the state has its campaigns. The vile contrarians must be segregated, intimidated, and humiliated.

Saturday, May 9, 2020

Masks Don't Work: A review of science relevant to COVID-19 social policy

My article has more than 110 K reads on Research Gate.

It is being used by several organizations, to inform their members.

It can be downloaded for free here:

Alternate link:

A good media interview about the article is this one:

My video presentation about the article is here:

Alternate link to the video is here:

Do watch the videos I made about COVID-19 - reviews of the science and more

Watch them all!

The videos, among other topics, explain my these articles:'t_Work_A_review_of_science_relevant_to_COVID-19_social_policy