Abstract: | Biological characteristics of C. trachomatis author's strain MT-2A (serovar D) is presented. Stages of development on its basis the experimental formalin-inactivated vaccine against Chlamydia were described. Humoral and cellular immune response to the vaccine administered on 3-dose immunization schedule in conjunction with polyoxidonium as adjuvant was studied. Significant immunological efficacy of the vaccine was shown. T- and B-cell immune responses were characterized. Titer of IgG antibodies against Chlamydia in blood serum after 3rd dose of the vaccine was 10,880+/-1,817.76. Assessment of T-cell response showed that reaction of delayed hypersensitivity with formation of granuloma presented in 60% of animals. Proportion of immunoblasts in reaction of blast-transformation was 29.3+/-2.8%. Perspectives of further studies of the developed corpuscular vaccine against Chlamydia are discussed. |