title: Serological survey of leptospirosis in sows with premature birth and stillbirth in Chiba and Gunma prefectures of Japan.
abstract: In 1996 and 1997, the seroprevalence against Leptospira in parturient sows with premature birth or stillbirth from two herds was investigated. In three out of four sow serum samples obtained in Gunma Prefecture, the antibody titers to Leptospira interrogans serovar copenhageni (M20) were higher than 10,000 (the reciprocal of the serum dilution). Furthermore, the antibody titers to L. interrogans serovar canicola (Hond Utrecht IV) were significantly high in the three sows and the titers ranged from 1,000 to 3,000. In sows obtained in Chiba Prefecture, significantly high antibody titers to serovar copenhageni (M20) were confirmed in eight out of 40 sows, and antibody titers greater than 10,000 in six of them. Significantly high antibody titers to L. interrogans serovar icterohaemorrhagiae (RGA) and L. canicola (Hond Utrecht IV) were confirmed in four and 18 out of the 40 sows, respectively, compared with the titers to the other serovars. These findings may indicate the prevalence of leptospirosis in pig herds in both Gunma and Chiba Prefectures.
authors.affiliation: Animal Health Laboratory, School of Agriculture, Ibaraki University, Ami, Japan.
authors.forename: Ayako
authors.initials: A
authors.lastname: Kazami
authors.forename: Hideki
authors.initials: H
authors.lastname: Watanabe
authors.forename: Tetsu
authors.initials: T
authors.lastname: Hayashi
authors.forename: Kazuhiko
authors.initials: K
authors.lastname: Kobayashi
authors.forename: Yasuki
authors.initials: Y
authors.lastname: Ogawa
authors.forename: Koshi
authors.initials: K
authors.lastname: Yamamoto
authors.forename: Yoshikazu
authors.initials: Y
authors.lastname: Adachi
mesh_terms: D000034:Abortion, Veterinary / Q000382:microbiology; D000372:Agglutination Tests / Q000662:veterinary; D000818:Animals; D000907:Antibodies, Bacterial / Q000097:blood*; D005260:Female; D005313:Fetal Death / Q000382:microbiology / Q000662:veterinary*; D007564:Japan / Q000453:epidemiology; D007919:Leptospira / Q000276:immunology*; D007922:Leptospirosis / Q000453:epidemiology / Q000382:microbiology / Q000662:veterinary*; D007752:Obstetric Labor, Premature / Q000382:microbiology / Q000662:veterinary*; D011247:Pregnancy; D016036:Seroepidemiologic Studies; D013552:Swine; D013553:Swine Diseases / Q000097:blood / Q000453:epidemiology* / Q000382:microbiology
chemical_list: D000907:Antibodies, Bacterial