The level of specific immunoglobulin G(IgG) in sera of hydatidosis patients against Echinococcus granulosus antigen is detected in dot-immunobinding assay with purified and crude Echinococcus granulosus antigens.

The current situation of researches on vaccines against Haemaphysalis longicornis ticks inside and outside China emphased on the aspects of the proteolytic, the realated molecules of procreation and RNAi technique, IgG-binding protein technique, was summarized with the candidate antigens for examples, and the development tendency of tick vaccines in the future was also looked forward.