In mice infected with influenza viruses of low pathogenicity, a mild illness occurs with few of the signs and symptoms that are seen in humans. The major parameters of mild to moderate disease are weight loss and the detection of virus, primarily in the lungs (Sidwell and Smee, 2004). In such a model, a polymer-bound 6′sialyl-N-acetyllactosamine was found to ameliorate weight loss in treated animals (Gambaryan et al., 2005).