CHD Scientists Uncover Evidence of Pfizer ‘Hot Lots’ Linked to Higher Rates of COVID Vaccine Injuries

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For Immediate Release

Washington, D.C. – Two Children’s Health Defense (CHD) scientists published a research letter, “Batch-dependent safety of the BNT162b2 mRNA COVID-19 vaccine in the United States,” last week in Science, Public Health Policy and the Law. The letter expands on earlier findings in Denmark from Schmeling, Manniche, and Hansen that identified unexpected batch-dependent suspected adverse events (SAEs) following vaccination with Pfizer’s BioNTech’s COVID-19 shot. The Denmark study associated vaccine lot dose allocations to SAEs rates from data collected in Denmark from 12/27/20 to 1/11/22, finding that the larger the vaccine lot size, the lower the SAE rates.

CHD Chief Scientific Officer Brian Hooker, Ph.D. and Senior Research Scientist Karl Jablonowski compared the Denmark results to those in the U.S. to determine if similar patterns exist within the larger U.S. population. The researchers used Pfizer vaccine dose data and SAE case data available through the Vaccine Adverse Event Reporting System (VAERS) to identify associations between doses allocated and SAEs using the same methodology as the Denmark team, classifying SAEs from case data into three categories: death, serious, and all SAEs.

Hooker and Jablonowski analyzed vaccine lot data, obtained through a Freedom of Information Act (FOIA) request by the Informed Consent Action Network in October 2022, to track vaccine batches from where they were manufactured to where they were administered. Earlier batches sent to mass distribution centers like hospitals had more side effects than later ones sent to places like pharmacies and large grocery chains. Some lots, particularly early ones, had higher rates of deaths and serious adverse events.

While the researchers wrote that they expected to find a high number of deaths in states with the highest populations, such as California, Texas or New York, the proportions of serious injuries and deaths were relatively higher in places such as South Dakota, Kentucky and Tennessee.

“These unexpected, widely divergent adverse event reports highlight the extreme lot-to-lot variability in the Pfizer BioNTech vaccine, illustrating myriad problems associated with the manufacture of these products,” said Dr. Hooker. “This rushed, ‘warp speed’ production process should have never been approved in the first place.”

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