Soon after the rollout of COVID-19 vaccines in 2020, top scientific journals published studies declaring the vaccines to be safe and effective — even amid mounting evidence of serious health concerns that eventually led vaccine manufacturers to add warning labels and pull products off the market.
In a new preprint study, scientists from Children’s Health Defense (CHD) and the Brownstone Institute reanalyzed data from those studies. Their analysis found clear health risks linked to the Pfizer and AstraZeneca shots, suggesting the studies “appear biased by design.”
CHD Senior Research Scientist Karl Jablonowski, an author of the preprint, criticized the highly credentialed researchers involved in one of the earlier studies.
“The bedrock, the foundation, the cornerstones, and the pinnacle of the scientific establishment” published an analysis of 46 million adults in England only “to proclaim ‘cardiovascular safety’ where, in fact, there is a veritable cardiovascular catastrophe,” he said.
For their preprint, Jablonowski and his co-researchers performed a safety analysis of the Pfizer and AstraZeneca COVID-19 vaccines using information from several large datasets from the U.K. — the same datasets used as the basis for numerous earlier studies, published in major journals, that concluded the vaccines were safe.
The new analysis confirmed that a significant risk for myocarditis and pericarditis associated with the Pfizer vaccines was evident in those earlier studies. Yet the studies’ results explicitly promoted the “cardiovascular safety” of the shots. The Moderna vaccines were also linked to heart risks.
CHD and Brownstone researchers also found that the risks for cardiovascular disease and death from the AstraZeneca vaccine were significantly higher than those of the Pfizer vaccine.
The AstraZeneca vaccine was a non-mRNA vaccine. It was never authorized or approved in the U.S., but was widely distributed in the U.K. during the early phase of the vaccine rollout. Like other vaccines, the AstraZeneca shot was advertised as safe and effective.
In 2024, AstraZeneca admitted in court documents that its shot could cause deadly blood clotting known as thrombosis with thrombocytopenia syndrome — also referred to as vaccine-induced thrombotic thrombocytopenia. The Johnson & Johnson shot was also linked to the condition.
Months later, AstraZeneca withdrew its vaccine from the market, though it denied the move was linked to the drug’s serious health risks.
At this time, major studies were published — including a highly cited 2024 study in Nature Communications — that promoted the safety of the AstraZeneca vaccine and other COVID-19 shots.
Hellbound and Down 