In this cohort study of 433,672 US veterans, the research team compared the frequency of adverse events experienced by recipients of the Pfizer (BNT162b2) and Moderna (mRNA-1273) COVID-19 vaccines. In comparison with the Moderna product, the Pfizer injections significantly elevated the risk of eight (8) of the 14 adverse events assessed:
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Hemorrhagic stroke: 1.24 risk ratio (0.72, 1.44; 95% CI)
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Ischemic stroke: 1.18 (1.02, 1.28)
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Myocardial infarction: 1.36 (1.20, 1.53)
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Other thromboembolic: 1.24 (1.10, 1.38)
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Myocarditis or pericarditis: 1.92 (1.00, 2.50)
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Arrhythmia: 1.13 (1.02, 1.17)
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Kidney injury: 1.21 (1.13, 1.35)
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Pneumonia: 1.23 (1.12, 1.34)
Source: eTable 5 on page 50 of the supplemental content.
Large VA COVID vaccine safety study done by Harvard researchers in 2022 shows statistically significant 36% higher risk of heart attack in people who took Pfizer
https://kirschsubstack.com/p/large-va-covid-vaccine-safety-study
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