Testing of an immunizing dose of a polyvid vaccine against animal chlamydia in cattle

The immunizing dose of experimental series of polyvid vaccine against animal chlamydia for different age and sex groups of cattle has been worked out. As a result of the conducted research, it was found that the optimal volumes of a biological product for immunization of calves and cows are vaccine doses of 1 cm3 and 2 cm3, respectively. The concentration of specific chlamydial antibodies for 30 days after immunization was within the average titer of 1:60 in calves and 1:50 in cows. In addition, it has been experimentally proven that a single injection of the vaccine to calves and cows ensures the circulation of chlamydia complement-binding antibodies in their blood for more than 6 months after immunization.