EN
The aim of the study was to monitor alterations in selected indices of innate immunity (the phagocytic index and percent of phagocytes) and acquired immunity (numbers of lymphocytes T and their Th and Tc/Ts subpopulations) in 60 rabbits experimentally infected with haemagglutinogenic Czech strain CAMP V-351 and non-haemagglutinating Polish BLA. The haemagglutinogenic Czech strain CAMP V-351 is active only in select indices of innate immunity, whereas non-haemagglutinating Polish strain BLA is reactive in the parameters of acquired immunity. Therefore, the obtained results permit the conclusion that the examined strains are not only serologically different but they also induce distinct patterns of immune responses, which provides evidence of immunotypes among this virus.