Immunostaining of the virus showed many InfA-NP-positive cells in the lungs of asthmatic/A(H1N1)pdm09 and control/A(H1N1)pdm09 mice since early phase after viral infection, but not in the lungs of mice from seasonal H1N1 groups, as shown in Fig. 5. The gene discussed is IFNA17; the disease is viral infectious disease.