Bloodclotting protein may be SARSCoV2's hidden accomplice, helping it hide from antibodies and reach blood vessels

Aug 24, 2026

Fibrinogen, the abundant plasma protein best known for forming blood clots, may play a second and far less benign role during SARS-CoV-2 infection: acting as a molecular bridge that simultaneously hides the virus from neutralizing antibodies and delivers it to the cells lining blood vessels.