[Invasiveness and immunogenicity of Babesia ovis in sheep].

Studies aiming to determine the invasion-ability and immunogeneity of B. ovis during the incubation period, the acute and the abating stages of the disease were carried out. It was established that in the first days of the incubation period blood is susceptible to invasion, but recipients which pull through the illness acquire immunity. It is proven that in case blood is taken late in the course of the disease and inoculated, the recipients undergo a more acute infection, but after recovery they are no more susceptible to reinvasion. It was observed that the main forms developed by babesia in sheep are piriformig, ring-like and anaplasmodic, while the percentage of total paresetemia increases in the course of the disease.