Scientists finally crack mystery of rare COVID vaccine blood clots - The Fact Factory

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Saturday, 11 April 2026

Scientists finally crack mystery of rare COVID vaccine blood clots

Researchers have uncovered why a rare blood clotting disorder can occur after certain COVID-19 vaccines or adenovirus infections. The immune system can mistakenly target a normal blood protein (PF4) after confusing it with a viral protein. This triggers clotting in extremely rare cases. The breakthrough means vaccines can now be redesigned to avoid this reaction while staying effective.

source https://www.sciencedaily.com/releases/2026/04/260409101106.htm

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