Fantastic update for Novavax: Clinical saliva samples show the presence of anti–SARS-CoV-2 mucosal IgA after a dose of their COVID-19 vaccine. Mucosal immunity often falls short, allowing viruses to replicate and cause infections regardless of vaccination status.

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This is a game-changing development! Mucosal immunity is crucial in fighting respiratory viruses like SARS-CoV-2. Novavax's vaccine showing presence of anti-SARS-CoV-2 mucosal IgA in saliva samples is a promising sign for enhanced protection. 