Experimental study on estimating the immunogenic potency of diphtheria and/or tetanus toxoids in monovaccines and associated vaccines.
The results obtained using the "classical" active immunoprotection tests on guinea pigs, biometrically interpreted by the regression analysis in "PROBIT" systems revealed that the biopreparations of the Cantacuzino Institute meet the validity conditions related to the parallelism of the "slopes" enabling the calculation of ED50 and of the relative potencies against the reference preparations. The results also showed that the relative potencies of the biopreparations tested by the two methodologies were very close. The geometrical means and the geometrical standard deviations of the titrers obtained in mice pointed to the similarity of the values following inoculation of the Cantacuzino Institute preparations on the one hand and of the international reference preparation on the other.
Durbacă
S
S
Cantacuzino Institute, Bucharest, Romania.
Andronescu
C
C
Diaconescu
A
A
D000818:Animals; D000907:Antibodies, Bacterial / Q000097:blood; D003017:Clostridium tetani / Q000276:immunology; D003353:Corynebacterium diphtheriae / Q000276:immunology; D004165:Diphtheria / Q000517:prevention & control; D004168:Diphtheria Toxoid / Q000276:immunology* / Q000592:standards; D015721:Diphtheria-Tetanus-Pertussis Vaccine / Q000276:immunology* / Q000592:standards; D004306:Dose-Response Relationship, Immunologic; D006168:Guinea Pigs; D007928:Lethal Dose 50; D051379:Mice; D011817:Rabbits; D012015:Reference Standards; D013045:Species Specificity; D013742:Tetanus / Q000517:prevention & control; D013745:Tetanus Toxoid / Q000276:immunology* / Q000592:standards; D014611:Vaccination / Q000379:methods*; D017778:Vaccines, Combined / Q000276:immunology / Q000592:standards
D000907:Antibodies, Bacterial; D004168:Diphtheria Toxoid; D015721:Diphtheria-Tetanus-Pertussis Vaccine; D013745:Tetanus Toxoid; D017778:Vaccines, Combined