The present invention provides compounds for use in treating and/or preventing influenza. The compound comprises a first and second domain in which the first domain comprises at least one anchoring group which binds to the surface of influenza viruses and the second domain comprises at least one anionic group. The first and second domains are covalently linked. Also provided are pharmaceutically acceptable salts, solvates, prodrugs or stereoisomer of the compounds.本發明提供用於治療及/或預防流感之化合物。該化合物包含第一結構域及第二結構域,其中該第一結構域包含結合至流感病毒之表面的至少一個錨定基團,且該第二結構域包含至少一個陰離子基團。該第一結構域與該第二結構域共價連接。本發明亦提供該等化合物之醫藥學上可接受之鹽、溶劑合物、前藥或立體異構體。