Patent ID: 8535665

Claim:
A method for determining whether antibody that binds to a first virus selected from the group consisting of respiratory syncytial virus, hepatitis A virus, adenovirus, rotavirus, H1N1 influenza virus, H5N1 influenza virus, wherein the first and the second virus are not the same, and H3N1 influenza virus inhibits infection by a second virus selected from the group consisting of H1N1 influenza virus, H3N1 influenza virus, and H5N1 influenza virus, the method comprising: administering an antibody to a cell or tissue culture system, wherein the antibody binds to the first virus; substantially removing free antibody from said cell or tissue culture system; and exposing said cell or tissue culture system to the second virus, wherein an absence or reduced severity of infection with the second virus indicates the presence of an antibody recognizing the first virus capable of inhibiting infection by the second virus.