Free hexasaccharide isolated from several Campylobacter species

摘要

An isolated or purified compound is provided, comprising A- GlcNAc[GlcNAc]-GalNAc-GalNAc-QuiNAc4NAc, wherein A is GIcNAc or GIc. There is further provided a vaccine based on such compound, having particular use to treat or prevent an infection caused by a organism. There is also provided an antibody or antisera against the compound, having particular use to diagnose the presence of an infection caused by a organism.