efficient protein-based influenza vaccines. H7N9, a low pathogenic avian influenza (LPAI)
virus, is a major public health concern and currently there are no effective vaccines against
this subtype. Herein, we constructed a novel attenuated Salmonella Typhimurium strain for
the delivery and expression of H7N9 hemagglutinin (HA), neuraminidase (NA) or the
conserved extracellular domain of the matrix protein 2 (M2e). We demonstrated that the …