designed S-sialoside human serum albumin (HSA)- and bovine serumalbumin (BSA)-modified glycopolymers using CuAAC.314 The multivalent system exhibited excellent hemagglutininblocking activity, as well as moderate amidase inhibition activity.Furthermore, these glycoconjugates did not exhibit any major cytotoxicityon HUVEC cells, which suggested its potential application toward ananti-influenza agent. Here, ALB is linked to influenza.