Mice and ferrets were immunised with two doses of the split virus vaccine (12-24 microg haemagglutinin derived from Influenza A virus (A/chicken/Italy/13474/99(H7N1))) with or without aluminium hydroxide adjuvant and challenged 3 weeks after second dose with the highly pathogenic A/chicken/Italy/13474/99 (H7N1) virus. The vaccine induced significant protection from disease after challenge with the wild-type virus. In the murine lethal challenge model, vaccination effectively prevented death and, furthermore, formulation with adjuvant reduced excessive weight loss and viral shedding (Cox et al., 2009).
Cox et al., 2009: Cox RJ, Major D, Hauge S, Madhun AS, Brokstad KA, Kuhne M, Smith J, Vogel FR, Zambon M, Haaheim LR, Wood J. A cell-based H7N1 split influenza virion vaccine confers protection in mouse and ferret challenge models. Influenza and other respiratory viruses. 2009; 3(3); 107-117. [PubMed: 19453487].