Researchers have known for at least the past 40 years that all viruses and bacteria attach to cells using (mainly) various sugar molecules before they invade them. Known attachment mechanisms involve mannose, glucosamine, ribose, and xylose, as well as collagen. So it's not surprising that cyclodextrin should help prevent viral attachment. Taking E.coli as an example, just interfering with the mannose attachment by putting mannose in the environment so that the bacterial and cellular mannose receptors are filled is sufficient. This is why, for example, drinking a d-mannose solution or giving a bladder instillation of mannose solves E.coli urine infections. \n\nKnowledge of surface sugars on bacteria and viruses is gradually building, and cheaper isolation of these same sugars is making them available so that in the relatively near future, if you know what virus or bacteria is invading your system you will be able to have a targeted drink or injection that will defeat that particular bug by filling all its cellular receptors.