Pathogenicity of a caprine strain of Mycoplasma mycoides subsp. mycoides for cattle.

Abstract The caprine strain (Ib9) of M. mycoides , given by endobronchial inoculation, is capable in inducing infection in calves. Typical CBPP lesions were produced in imported breeds when they were simultaneously infected with a mouse passaged strain of T. vivax . Mycoplasma persisted in the regional lymph nodes of 4 of the 5 infected animals which failed to develop lung lesions. In these animals the caprine strain might behave like a vaccine strain. Further studies are required as to the pathogenicity and immunogenicity of the caprine strain of M. mycoides for cattle.