Aletho News


Bad Pfizer Vaccine Batches Account for 4.2% of doses but 71% of Serious Adverse Events

Explains Why Some Have Severe Side Effects and Others Do Not

By Peter A. McCullough, MD, MPH | Courageous Discourse | April 13, 2023

I am routinely asked: why are so many people who took the COVID-19 vaccines apparently fine while others are suffering heart damage, strokes, blood clots and are ending up disabled or dead? It has been suspected for many months that there may be variations in vaccine lots or batches that could partially explain these observations. In other words, not everyone is getting the same dose of mRNA.

Under Emergency Use Authorization, the vaccine companies and their subcontractors do not have any inspections of the final filled and finished vials. This is unprecedented for a widely used product of any type. It is possible that lipid nanoparticles aggregate in suspension and so some batches may contain more mRNA than others. Likewise, since lot size has varied over time, it is possible that contaminants from the manufacturing process may be concentrated in some smaller lots compared to larger ones. Finally, there may be product transport, storage, and use factors that denature mRNA including heating, air injected into vials, and multiple needles dipped into the suspension.

The contaminant issue came to light as Japan returned millions of doses when visible debris was seen in the bottom of the vials. Additionally, since metallic beads are used by the biodefense contactors, it is possible that smaller initial lots could have had magnetic debris that explained “magnetism” in the arm where the shot was given as reported early in the vaccine campaign.

A report from Schmeling and coworkers using Pfizer BNT162b2 mRNA COVID-19 vaccine found that 71% of serious adverse events came from 4.2% of doses (high risk batches) conversely <1% of these events came from 32.1% of doses (low risk batches). The variation explained for the high and moderate risk batches was 78 and 89%, respectively. Thus as more doses were given out of those vials, the greater the number of side effects were reported. This means that the majority of risk is in the shot and not the person who received it.

Schmeling, M, Manniche, V, Hansen, PR. Batch-dependent safety of the BNT162b2 mRNA COVID-19 vaccine. Eur J Clin Invest. 2023; 00:e13998. doi:10.1111/eci.13998

These are critically important results. They imply the COVID-19 vaccine debacle is indeed a product problem and not due to patient susceptibility in most circumstances. Additionally, the lack of inspections has led to a safety disaster. Some unfortunate patients are getting too much mRNA, contaminants, or both and thus are exposed to damaging and in some cases, lethal injections.

Reuters Aug 2021, Japan suspends 1.6 mln doses of Moderna shot after contamination reports

Schmeling, M, Manniche, V, Hansen, PR. Batch-dependent safety of the BNT162b2 mRNA COVID-19 vaccine. Eur J Clin Invest. 2023; 00:e13998. doi:10.1111/eci.13998

April 13, 2023 - Posted by | Science and Pseudo-Science |


  1. I feel that Peter McCullough is being too generous toward the vaccine manufacturers by suggesting the number of ways in which the covid ‘vaccine’ may have been more, or less, injurious. The one possibility he omitted was that the ‘vaccine’ may have been deliberately manufactured to produce the ‘confusing’ results we see. As Mike Yeadon said, quality control in the pharmaceutical industry is paramount, else their product would be pulled. Therefore we can either believe that the disparities in covid ‘vaccine’ were due to sloppy quality control, or that it was deliberate.
    From the information we have today, we know that the covid ‘pandemic’ was neither an act of God or accidental. The fact that the ‘vaccine’ manufacturers had patents before the covid disease appeared on the scene shouts conspiracy to all who can see.
    Bill Gates, who has a leaning toward eugenics, has stated that we need to reduce world population, and is one of the greatest proponents and funders of vaccination. It would therefore not be unreasonable to link his belief in eugenics with the ‘efficacy’, or otherwise, of ‘vaccines’.
    In other words, the ‘vaccines’ would be one of the means of reducing the world’s population. However, if all ‘vaccines’ were consistent in efficacy, and death and injury were common among all batches of the ‘vaccine’, it would soon become obvious, and the ‘vaccines’ would have to be withdrawn to avoid mob lynching of the manufacturers.
    By making batches ‘variable’ or inconsistent, plausible deniability (for death and injury) becomes available to the manufacturers. In the case of death or injury, they can always claim that it was an underlying morbidity or some other reason, not the ‘vaccine’. After all ‘not everybody who is vaccinated has the same reaction’ will be their response.
    So, although the steps to population reduction may, of necessity and a need to obscure their actions, be slow, the number of excess deaths indicates that their plan is under way.
    So, without wishing to be too hard on Peter, I feel he is missing the point.


    Comment by Bill Francis | April 14, 2023 | Reply

    • McCullough probably would not argue against your thesis.

      He only presents what has been scientifically demonstrated. We cut to the chase.

      I have noticed that he is extreme in not attributing human actions to evil intent.


      Comment by aletho | April 14, 2023 | Reply

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