Inhibition of viral infection by Idea-HSA in comparison to HSA could be observed as reduction of infected cells (Fig. 5A, B; Fig. 5E upper row versus Fig. 5F upper row) (Fig. 5B: IC90 0.7 μg/ml, IC50 3.5 μg/ml) as well as a decrease in the number of syncytia (Fig. 5C, D; Fig. 5E lower row versus Fig. 5F lower row) (Fig. 5D: IC90 1.5 μg/ml, IC50 4.5 μg/ml). The gene discussed is ALB; the disease is viral infectious disease.