The Most Revolutionary Act

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The Most Revolutionary Act

CDC Report: COVID Bivalent Booster Falls Flat in First ‘Real-World’ Test

By  Josh Mitteldorf, Ph.D. Madhava Setty, M.D.

Results from a recent Centers for Disease Control and Prevention report suggest the COVID-19 bivalent booster does little more than restore protection levels to pre-vaccination levels.

The only “emergency” was that collapsing demand for Pfizer’s original shots had caused a lapse in the drugmaker’s windfall profits.

Responding to this embarrassment, the Centers for Disease Control and Prevention (CDC) last week published the first data on efficacy of the bivalent boosters.

Using the agency’s own data and methodology, we calculate an effectiveness of 9% compared to no vaccine at all. However, inexplicably, the CDC reported an effectiveness in the range of 19% to 50%, depending on previous vaccination history.

Even accepting the CDC’s computation, the FDA’s authorization was illegal because their rules demand a minimal efficacy of 50% for emergency use authorization.

It gets more interesting when we look at subjects in the study who were fully vaccinated but did not get the new booster. They did much worse than the unvaccinated. This is more evidence of something we reported in the past: Modest efficacy of the COVID-19 “vaccines” lasts a short while, then falls to zero and continues falling well below zero. A few months after vaccination, the vaccinated are more likely to get COVID-19 than the unvaccinated.

Breaking down the study

The study in question is a Morbidity and Mortality Weekly Report (MMWR) released Nov. 22 by the CDC that purportedly demonstrated a protective benefit of the bivalent COVID-19 booster that was authorized for emergency use on Sept. 1 of this year.

The CDC authors offered some rare transparency up front:

“Postauthorization immunogenicity studies have shown similar neutralizing antibody titers to BA.4/BA.5 after receipt of either a monovalent or BA.4/BA.5–containing bivalent vaccine as a fourth dose; however, immunogenicity studies are not generally designed to measure clinical impact.”

Let’s break that down …

First, “immunogenicity” refers to an immune response in the form of antibody production that can be detected in a blood test. It’s a further leap to draw conclusions about how your body will respond when it is exposed to an actual virus.

Nevertheless, there is no requirement for Pfizer and Moderna to demonstrate that their new booster formulation will prevent COVID-19 or any other clinical outcome.

Second, the studies have not shown that the bivalent booster produces an antibody response to the new Omicron subvariants that is any better than an additional booster with the original COVID-19 shot.

Given these first two points, evidence of any form of booster effectiveness would be a remarkable finding from the start.

Third, the studies were conducted after authorization was granted, i.e. “post-authorization.” This is the Alice in Wonderland script, where the trial takes place after the execution.

And this new after-the-fact “trial” is not a double-blind placebo-controlled study of the type that was done two years ago for the original mRNA products. The MMWR study was based on data from people who came in for COVID-19 testing at their local drug stores.

All “participants” were sick. Every person had a respiratory disease with symptoms similar to COVID-19. So the study was capable only of distinguishing people who were sick with COVID-19 from people who were just as sick but tested negative for the virus.

If people are equally sick, why do they care if they test positive for COVID-19? People opt for preventive therapies not to prevent a positive test, but to keep them from getting sick. This study design offered no information about the only interesting question.

Thus, as a test of “vaccine efficacy,” this study design was dead on arrival. It was a non-starter.

What the CDC data show


The CDC reported that the bivalent booster offered a modest benefit in avoiding a positive COVID-19 test compared to those who received the primary series with or without one or two monovalent boosters. The estimated bivalent booster effectiveness ranged from 14% to 61%, depending on age, number of monovalent boosters and elapsed time since last dose.


We were unable to replicate their findings because the authors did not share the raw numbers for each subgroup in their report.

However, our own calculation, based on their methodology applied to the aggregate data of all subgroups, resulted in a bivalent booster effectiveness of only 9%.

Read between the lines: negative efficacy


This clearly implies — though it was not stated — that the vaccinated are more likely to test positive for COVID-19 than the unvaccinated.

According to our calculation (based on the CDC’s data and methodology), the vaccine effectiveness in preventing a positive COVID-19 test was -17% for people who had received two shots, -36% for three shots and -45% for four shots.

This is prima-facie evidence that the more monovalent shots people had, the less protected they were.

To reiterate: Vaccination with the monovalent booster resulted in negative effectiveness. The greater the number of doses, the greater the risk of contracting COVID-19. This constitutes a dose-dependent effect, one of the hallmarks of causality.

As stated above, the effectiveness of the bivalent booster across all ages and prior monovalent doses was a mere 9% compared to those who were unvaccinated. It is thus reasonable to conclude that the bivalent booster does little more than restore immunity to pre-vaccination levels.

And this meager 9% protection is not without cost. These mRNA products have far higher rates of severe adverse reactions, including death, than any vaccines in the past.

Nevertheless, the CDC authors summarized it this way:

“In this study of vaccine effectiveness of the U.S.-authorized bivalent mRNA booster formulations, bivalent boosters provided significant additional protection against symptomatic SARS-CoV-2 infection in persons who had previously received 2, 3, or 4 monovalent vaccine doses.”


“Protecting from severe COVID-19” is exactly what people considering the new booster would want to hear. But it is utterly baseless. The report did not measure the incidence of severe COVID-19. “Severe COVID-19” is not mentioned anywhere in the report.

Nevertheless, billions of taxpayer dollars have already been used to purchase 170 million doses of the new bivalent product.

Some other mainstream reports have been more skeptical of the new boosters. The New York Times, a reliable bullhorn for the CDC’s “recommendations” did not cover this story. However, several days prior to the MMWR release, the Times ran this story, “Will Covid Boosters Prevent Another Wave? Scientists Aren’t So Sure.” Dr. Meryl Nass dissected this remarkable critique from the Times.

The newest findings demonstrate that anywhere from two to five doses later, those who have dutifully followed the CDC’s “guidance” are back to square one. However, media coverage of this two-year-long exercise in futility may finally be shifting.



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