Usefulness of ELISA and radial immunodiffusion tests for evaluation of the degree of purification of influenza diagnostic and vaccine preparations

It is necessary to use new diagnostic tests for careful and rapid evaluation of a degree of purification and immunogenicity of vaccine anti-influenza preparations. In this study in order to obtain this purpose a radial immunodiffusion++ test and immunoenzymatic test (ELISA) were used Recommended by WHO radial immunodiffusion++ test enable to determine a level of haemagglutinin of particular types and subtypes of influenza virus in polyvalent preparations. However, this test is time consuming therefore for hemagglutinin level determination ELISA test was adapted. This test is hundred times more sensitive and can be applied with success for determination of hemagglutinin level of influenza virus A or B. For evaluation of a degree of purification of vaccine preparations ELISA was elaborated, in which as an index of purification of preparation a level of ovalbumin is determined. This test is specific and extremely sensitive, and it is possible to determine ovalbumin level with accuracy of 1ng in 1 ml of preparation.