FIELD: medicine.
SUBSTANCE: live attenuated Pasteurella multocida bacterium is modified by introduing a mutation into the gene Orf-15. The mutation represents insertion and/or deletion in the gene Orf-15. As a result of modification, the bacterium is not able to express the functional protein Orf-15 that leads to its attenuation. Also, disclosed is the use of such bacterium for preparing a related vaccine for human or animal protection against Pasteurella multocida bacteria infection or pathogenic effects of the infection.
EFFECT: increased efficacy of applying the composition.
16 cl, 1 dwg, 3 tbl, 6 ex
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