Baculovirus vector was prepared for expression of VLPs containing H5 proteins derived from three clades of H5N1 virus.
Triple-clade H555 VLPs were prepared in Sf9 cells in a single manufacturing cycle.
VLPs showed hemagglutination activity and morphologically resembled influenza virions.
Vaccination with H555 VLPs protected chickens from H5N8 and two H5N1 influenza isolates.