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Senate Hearing on COVID Vaccine Adverse Events; Study IDs Blood Clot Trigger

Jul 27, 2026

A Senate subcommittee heard testimony that mRNA COVID vaccines were considered the likely cause in 73.9% of post-vaccine deaths in a large autopsy series. Separately, NEJM research identified the K31E antibody mutation and adenovirus protein pVII as triggers of rare VITT blood clots. The findings may enable safer adenoviral vaccines.