The PCR-profiles of 12 archival cultures of listeria isolated from different species of animals and stored in the collection of microorganisms of the NSC IEСVM were determined. It was established that 10 isolates have genes prs, inlB, inlA, inlC, inlJ, actA, plcB, hly, iap, which characterizes them as highly virulent. The L. monocytogenes 61052 isolate did not contain the inlA gene, and the actA and hly genes were not detected in L. monocytogenes Varja. Using PCR, it was also established that 11 studied cultures belong to serotypes 4b, 4d, 4e, as well as one isolate to 1/2a. The obtained data can be used to improve the diagnosis of animal listeriosis in Ukraine due to the creation of highly specific antigens
Keywords: listeriosis, polymerase chain reaction, virulence factors
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