When comparing salivary IgA antibody levels in those with vaccine-only vs vaccine-and-infection immunity, researchers found that IgA levels to spike and RBD are high in those with hybrid immunity but low in those with vaccine-only immunity. Read more: ow.ly/Xg8W50XNcci.
Abstract. Hybrid immune individuals who experience an infection after a severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) mRNA vaccine series sh
