The paper gives data on the sorption of influenza A and B viruses diluted from different solutions on polyaniline sorbents synthesized with low and high molecular-weight polymer acids. Irrespective of the antigenic structure of surface proteins, the influenza A and B viruses isolated in the period of 1977 to 2008 were shown to be able to be immobilized on polyaniline sorbents in the temperature range of 4 to 37 degrees C. The immobilized viruses interacted with homologous immune sera.