Massive Real-World study checks COVID vaccine power
NCT ID NCT06199934
First seen Nov 01, 2025 · Last updated May 23, 2026 · Updated 31 times
Summary
This study looked at health records from nearly 20 million people in California and Louisiana to see how well different versions of the Pfizer-BioNTech COVID-19 vaccine prevent severe illness, hospitalization, and death. No new participants were enrolled; instead, researchers used existing data from vaccine registries and insurance claims. The goal was to understand real-world vaccine effectiveness over time.
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Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.
This is a summary of the original study . Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.
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Contacts and locations
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Locations
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Pfizer Global Headquarters
New York, New York, 10001, United States
Conditions
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