Med. Weter. 2020, 76 (10), 555-558

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Leptospirosis in swine in the light of accepted characterization
The publication is presenting changes in epidemiology and economic importance of leptospirosis in swine. During the fifties or even earlier or later of the twenty century this disease in swine was causing remarkable losses occurring worldwide. During the end of the twenty century and during the twenty first century the importance of leptospirosis of swine has decreased, being restricted to Argentina, Brasil, Northern Hemisphere, Northern Australia and New Zealand. In Europe, including Poland, endemic, very often symptomless infection or presentation of reproductive failer as abortion, stillbirth, the birth of weak piglets, reduced viability was demonstrated. Other symptoms and pathological changes, if developed were similar do occurring also in other infectious diseases of swine and did not present diagnostic value for swine leptospirosis. Therfore for diagnosis of swine leptospirosis, laboratory tests have to be used. This publication is mentioning as the prescribed and most widely used microscopic agglutination test (MAT), and as alternative the competitive ELISA. For detection and identification of nucleic acids of leptospira serovars the PCR is recommended. Control of leptospirosis in swine is dependent on the combined use of antibiotics, vaccination and management. However antibiotics are in many countries prohibited for use, against leptospirosis of swine. Vaccines are very seldom available and theirs used is not on satisfied level. Management is difficult to perform and economically in many cases not respected
Keywords: Leptospirosis, swine, change in epidemic importance, zoonosis