Prof. Dolores Cahill of Ireland (Immunologist) believes that in a …

Comment on Are mRNA Vaccines for COVID-19 helpful or harmful? by Sean Pitman.

Prof. Dolores Cahill of Ireland (Immunologist) believes that in a few months people will start dying of cytokine storms from the mRNA vaccines. This video is just over 10 minutes long–please debunk this info…if you can. Following also is a paper abstract from PubMed–you’re also welcome to try and debunk this one too. I may be a retired carpenter, but I do know when I’m being lied to.

First of, you’re mixing apples and oranges here. Aside from being a well-known anti-vaxx conspiracy theorist (with a retracted anti-vaxx paper), Dr. Cahill is talking about the SARS vaccine against the SARS virus that emerged in China in 2002. This is different from the mRNA vaccines against the COVID-19 virus that hit the world in 2020. Now, it is true that some of the earlier attempts at a SARS vaccine showed ADE (Antibody-dependent enhancement) effects in mouse models. Further work showed that this seemed to be linked, not so much to the antibody response, as to the T-cell response. Specifically, a “Th2” heavy response (as opposed to more Th1 or a balance between the two), was linked to lung pathology. Those are subdivisions of the CD4+ T cells, based on which cytokines they produce, and these results alerted everyone to keep an eye out for that. Mouse immunogenicity studies with the current mRNA vaccine candidates against COVID-19, in particular, did not show these effects… This has been why we’ve seen that the makers of the mRNA vaccines against COVID-19 take so much care to put the Spike protein into its “perfusion” conformation (so that it doesn’t attach itself to human cell membranes). The worry has been that if antibodies are generated to it after it’s had a chance to bind to human cells, that gives you a better chance for non-neutralizing antibodies (and thus a higher risk for ADE). A high proportion of outright neutralizing antibodies is a safeguard against antibody-driven enhancement of ADE disease – which is what the mRNA vaccines against COVID-19 have shown. (Dr. Derek Lowe, December 18, 2020)

As far as the paper you cite published by Timothy Cardozo and Ronald Veazey (October, 2020) cited concerns over what is known as “antibody-dependent enhancement” of vaccines – with the potential to increase a negative response to the actual viral infection as compared to those who never had the vaccine. This concern is based on the very real observation of more severe diseases occurring in individuals who received vaccines to other viruses in the past – such as the one for dengue fever. In a 2018 study, scientists at La Jolla Institute for Immunology showed that newborn mouse pups harboring anti-Zika antibodies were more vulnerable to death from dengue exposure than mice that lacked anti-Zika antibodies. Certainly, this is an example of antibody-dependent enhancement (ADE). However, ADE has not been shown to occur in individuals that received COVID-19 vaccines during the double-blinded trials over many months or since the mRNA vaccines have started to be given to medical providers (like me).

Now, the reasons why ADE isn’t a significant concern for the mRNA vaccines against the COVID-19 virus is partly due to the fact that the COVID-19 virus does not infect macrophages in a way that is pro-inflammatory:

SARS-CoV infection of macrophages is abortive and does not alter the pro-inflammatory cytokine gene expression profile after antibody-dependent uptake4. Findings to date argue against macrophages as productive hosts of SARS-CoV-2 infection (Link).

For more specific details regarding the underlying science of immunology, see:

Vaccines that elicit neutralizing antibodies against the S protein reliably protect animals from SARS-CoV challenge without evidence of enhancement of infection or disease. These data suggest that human immunization strategies for SARS-CoV-2 that elicit high neutralizing antibody titres have a high chance of success with minimal risk of ADE. For example, subunit vaccines that can elicit S-specific neutralizing antibodies should present lower ADE risks (especially against S stabilized in the prefusion conformation, to reduce the presentation of non-neutralizing epitopes8). These modern immunogen design approaches should reduce potential immunopathology associated with non-neutralizing antibodies… It is encouraging that a recent assessment of an inactivated SARS-CoV-2 vaccine elicited strong neutralizing antibodies in mice, rats and rhesus macaques, and provided dose-dependent protection without evidence of enhanced pathology in rhesus macaques (Lee, et. al., 2020).

There are concerns about the potential for more serious adverse events—enhanced respiratory disease (ERD) following infection and a subtype of ERD, antibody-dependent enhancement (ADE) following infection after vaccine administration. There are two mechanisms of ADE, both of which “occur when non-neutralizing antibodies or antibodies at sub-neutralizing levels bind to viral antigens without blocking or clearing infection.” In ADE via enhanced infection, non-neutralizing antibodies bound to the virus enhance infection rates in target cells, such as macrophages, leading to more severe disease. In the second type described by Lee et al., ADE via enhanced immune activation, binding of non-neutralizing antibody to the virus leads to the formation of immune complexes in lung tissues, which, in turn, lead to “secretion of pro-inflammatory cytokines” and “activation of the complement cascade”. “The ensuing inflammation can lead to airway obstruction and can cause acute respiratory distress syndrome in severe cases.” A recognized example of this type of enhanced respiratory disease results from some infections with measles after measles vaccination and has been seen with vaccines for RSV, dengue, and SARS. “Existing evidence suggests that immune complex formation, complement deposition and local immune activation present the most likely ADE mechanisms in COVID-19 immunopathology.” (Lee, et. al., 2020)

Vaccine developers are well aware of ADE and have pursued approaches that make ADE less likely. This includes selecting specific epitopes within the receptor binding domain of the spike protein as targets for a neutralizing antibody response. It is encouraging that some early clinical trials reports have indicated both a strong neutralizing antibody response and and a strong type 1 helper T cell (TH1) response, rather than the TH2 response associated with immunopathology. (Anderson, et. al., 2020)

Sean Pitman Also Commented

Are mRNA Vaccines for COVID-19 helpful or harmful?

1. I assume some defective mRNA strands and lipid layers can be generated during the myriad of involved complex chemical processes. Do we understand percentage of defective nanoparticles / mRNA strands? Does process include QA that somehow reduces or eliminates potentially harmful defects. What is risk of defective mRNA strands that could encode for harmful proteins? Any other associated risks here that I am not addressing?

Given that the mRNA sequences in the Pfizer and Moderna vaccines are synthetically produced, I would say that there are very few defective mRNA sequences. And, when it comes to producing proteins based on these few defective sequences, the additional risk from such defective sequences for the human body would be, effectively, zero. In fact, a few slight variations in the protein sequence for the spike protein would only result in slight variations in the immune system response. And, producing such slight variations are already part of how our human immune system is programmed to work – automatically producing slight variations in the antibodies produced against a particular type of foreign antigen, for example.

2. How much independent review occurred with these vaccines? Is the Global Advisory Committee on Vaccine Safety the only body that reviewed. Do scientiests get hands-on and eyes-on access to the actual chemical processes to verify what is happening (in vitro and in vivo), or are they just provided with white papers and reports for review?

A great many scientists were involved in the production and review of the mRNA vaccines. These vaccines, how they work, and their effects on human biochemistry are very well known by a great many scientists who work in this field of immunochemistry. There are no fundamental secrets here.

3. Some papers and FAQs claim the generated viral “spike protein” is presented on the cell surface. Some of your dialogue here seems to indicate that this is not the case. Which is it? How is it presented? Is it presented in a variety of ways?

Here are a few diagrams that illustrate what’s happening within different cells of the body where the mRNA sequences are decoded and presented:

Mechanism of action of mRNA vaccines. 1. The mRNA is in vitro transcribed (IVT) from a DNA template in a cell-free system. 2. IVT mRNA is subsequently transfected into dendritic cells (DCs) via (3) endocytosis. 4. Entrapped mRNA undergoes endosomal escape and is released into the cytosol. 5. Using the translational machinery of host cells (ribosomes), the mRNA is translated into antigenic proteins. The translated antigenic protein undergoes post-translational modification and can act in the cell where it is generated. 6. Alternatively, the protein is secreted from the host cell. 7. Antigen protein is degraded by the proteasome in the cytoplasm. The generated antigenic peptide epitopes are transported into the endoplasmic reticulum and loaded onto major histocompatibility complex (MHC) class I molecules (MHC I). 8. The loaded MHC I-peptide epitope complexes are presented on the surface of cells, eventually leading to the induction of antigen-specific CD8 + T cell responses after T-cell receptor recognition and appropriate co-stimulation. 9. Exogenous proteins are taken up DCs. 10. They are degraded in endosomes and presented via the MHC II pathway. Moreover, to obtain cognate T-cell help in antigen-presenting cells, the protein should be routed through the MHC II pathway. 11. The generated antigenic peptide epitopes are subsequently loaded onto MHC II molecules. 12. The loaded MHC II-peptide epitope complexes are presented on the surface of cells, leading to the induction of the antigen-specific CD4 + T cell responses. Exogenous antigens can also be processed and loaded onto MHC class I molecules via a mechanism known as cross-presentation. (Link)

Now, The mRNA-1273-encoded prefusion stabilizes the S protein (Moderna Vaccine) consists of the SARS-CoV-2 glycoprotein with a transmembrane anchor and an intact S1–S2 cleavage site. The presence of the transmembrane anchor would seem to enable some of the spike proteins to remain attached to the surface of the cell that produced them, such as a muscle cell, but would still be recognized as “foreign” by the immune system. (Link)

See also: Link


Are mRNA Vaccines for COVID-19 helpful or harmful?
The following commentary by organic chemist Derek Lowe is also helpful in understanding this question (December 4, 2020):

Bob Wachter of UCSF had a very good thread on Twitter about vaccine rollouts the other day, and one of the good points he made was this one. We’re talking about treating very, very large populations, which means that you’re going to see the usual run of mortality and morbidity that you see across large samples. Specifically, if you take 10 million people and just wave your hand back and forth over their upper arms, in the next two months you would expect to see about 4,000 heart attacks. About 4,000 strokes. Over 9,000 new diagnoses of cancer. And about 14,000 of that ten million will die, out of usual all-causes mortality. No one would notice. That’s how many people die and get sick anyway.

But if you took those ten million people and gave them a new vaccine instead, there’s a real danger that those heart attacks, cancer diagnoses, and deaths will be attributed to the vaccine. I mean, if you reach a large enough population, you are literally going to have cases where someone gets the vaccine and drops dead the next day (just as they would have if they *didn’t* get the vaccine). It could prove difficult to convince that person’s friends and relatives of that lack of connection, though. Post hoc ergo propter hoc is one of the most powerful fallacies of human logic, and we’re not going to get rid of it any time soon. Especially when it comes to vaccines. The best we can do, I think, is to try to get the word out in advance. Let people know that such things are going to happen, because people get sick and die constantly in this world. The key will be whether they are getting sick or dying at a noticeably higher rate once they have been vaccinated.

No such safety signals have appeared for the first vaccines to roll out (Moderna and Pfizer/BioNTech). In fact, we should be seeing the exact opposite effects on mortality and morbidity as more and more people get vaccinated. The excess-death figures so far in the coronavirus pandemic have been appalling (well over 300,000 in the US), and I certainly think mass vaccination is the most powerful method we have to knock that back down to normal.

That’s going to be harder to do, though, if we get screaming headlines about people falling over due to heart attacks after getting their vaccine shots. Be braced.


Are mRNA Vaccines for COVID-19 helpful or harmful?
I know that various European countries, including the Netherlands, Denmark, and Spain, have reported outbreaks of COVID-19 in mink pelt farms – leading to the culling of more than a million animals. From laboratory experiments, it’s also clear that ferrets (a relative of the mink) are also readily infected with the “novel coronavirus”. Aside from this, however, I’m not aware of any “issues” with animal experiments regarding COVID-19 in particular. However, in 2008 there was an interesting experiment involving ferrets that were given the flu vaccine against the H1N1 virus – who then became sicker once exposed to the live virus as compared to those ferrets that weren’t vaccinated. The reason for the effect was unclear, and Skowronski, the lead author, urged other research groups to take up the question.

“Skowronski likened the mechanism to what happens with dengue viruses. People who have been infected with one subtype of dengue don’t develop immunity to the other three. In fact, they are more at risk of developing a life-threatening form of dengue if they are infected with one of the other strains.”

Skowronski called the second theory the infection block hypothesis. Having a bout of the flu gives the infected person antibodies that may be able, for a time, to fend off other strains; flu shots only protect against the strains they contain. So under this theory, people who didn’t have flu in 2008 because they got a flu shot may have been less well armed against the pandemic virus.”

While interesting, such an effect has not been identified in the animal or human trials for the mRNA vaccines against COVID-19. Also, subsequently updated flu vaccines to the H1N1 strain haven’t had this problem either (Link).


Recent Comments by Sean Pitman

Scott Ritsema, Dr. Lela Lewis, Pastor Wyatt Allen an Dr. Peter McCullough on COVID-19 Vaccines
Yeah, well, it might help to actually understand the primary data one is looking at before one makes up his/her mind… which Dr. McCullough clearly doesn’t understand – particularly when it comes to the meaning of the VAERS data.


Scott Ritsema, Dr. Lela Lewis, Pastor Wyatt Allen an Dr. Peter McCullough on COVID-19 Vaccines
If you’re going to just present one side of an issue, just do that. Don’t bother citing your “academic” credentials and history of “always” trying to present a balanced perspective. And, don’t complain about others, like the mainstream media, doing the very same thing that you’re doing – presenting only one side of an issue.

Beyond this minor point, have you nothing of real substance or interest to say about the actual primary claims being made? about all the scientific data that appears to strongly counter the sensational claims that Dr. McCullough’s presented in this video?


Scott Ritsema, Dr. Lela Lewis, Pastor Wyatt Allen an Dr. Peter McCullough on COVID-19 Vaccines
Then don’t complain about others doing exactly what you’re doing…

Anyway, the real issue with the video is that the main claims are almost all completely false and those that are true are presented in a very misleading manner – which has the potential to harm or even kill people. That’s the real problem.

Now, I know that you’re a registered nurse and lifestyle director of the Eden Valley Institute of Wellness in Loveland, Colorado. And, that’s great! I would suggest to you, however, that excellent health would also help someone do very well with the mRNA vaccines. But why not just rely on excellent health alone? Doesn’t the Adventist Health Message completely negate the need for vaccines? Well, no, it doesn’t. I know of several very healthy vegans who have been seriously sicked by COVID-19 with some having sustained permanent and progressive injuries – and some have even died. So, I would suggest to do both – to follow the Health Message as carefully as possible and to take the mRNA vaccines. This will provide the greatest level of protection possible to our Adventist brothers and sisters. It’s certainly what Mrs. White advocated in her own day when smallpox was killing many people. She certainly wasn’t opposed to the smallpox vaccine and supported her own son William White getting vaccinated, along with his staff and associates (Link). And, her own secretary (D. E. Robinson) wrote that Mrs. White was also vaccinated for smallpox (Link).


Scott Ritsema, Dr. Lela Lewis, Pastor Wyatt Allen an Dr. Peter McCullough on COVID-19 Vaccines
That’s just it. Scott didn’t claim to “be providing a neutral platform”. He just complained about others not doing so, and then didn’t do so himself. He said that,

“I believe that everybody needs to hear both sides. My background in academics was in history, I was a history teacher. I got into ministry later in life… but I come from that academic background of dialogue and inquiry. And, as a history teacher, whenever I notice that maybe one side was getting a little more play and imbalance, and the other side had some valid and interesting things to bring to the table, whether I agreed with them or not, I would always want to give air to that other side – to let people think and evaluate for themselves and grant people that they are capable, that they are individuals with a mind, and can evaluate the evidence for themselves.”

Yet, immediately after saying all this about being all even-handed with presenting a topic, he immediately says that in this particular video, he’s “Looking forward to hearing another side of this discussion” – without actually evenhandedly presenting and/or discussing both sides for his audience to “evaluate the evidence for themselves”.

Again, I don’t mind if someone wants to present one particular side of a discussion. However, when someone states, upfront, that they are an “academic” who is all into presenting data on both sides of an issue so that people can make up their own minds, it comes across as a bit non-academic when only one side is then presented without any time given for anyone on the other side to address and give their own take on the claims being made.


COVID-19 and Vaccines – Update
As I’ve asked others, why do you think that the overall “all-cause” death rate in the United States, and around the world, suddenly spiked in March of 2020 if this pandemic we’re in is really no big deal? – if the death rates have been so exaggerated as you claim? If not for the COVID-19 pandemic, what else has killed off more than 600,000 people so far in this country alone (3.9 million worldwide)? – beyond what would usually be expected? (Link)

I’m sorry, but Dr. McCullough is basing his position off of a false interpretation of the VAERS data (maintained by the FDA and CDC by the way) and false interpretations of a few other papers as well, which he evidently doesn’t understand.