Serological evidence of the persistence of infection with Leptospira interrogans serovar Hardjo in cattle in Mongolia.
Serum samples were collected randomly from Mongol breed cattle in three geographically distinct provinces of Mongolia. Antibodies specific to Leptospira interrogans serovar Hardjo were detected by microscopic agglutination test (MAT) at titres of 100 or more in 80.4% (86/107) of the samples from Dornod Province, but in only 28.9% (13/45) in Arkhangai and 23.5% (12/51) in Khuvsgul Provinces, respectively. Treatment of 9 serum samples from Dornod, positive to serovar Hardjo in MAT and negative in the homologous immunoglobulin G (IgG) enzyme-linked immunosorbent assay (ELISA), with 2-mercaptoethanol (2-ME) indicated that those animals were recently infected.
Odontsetseg
Namsraijav
N
Department of Disease Control, Graduate School of Veterinary Medicine, Hokkaido University, Kita 18, Nishi 9, Sapporo, Hokkaido 060-0818, Japan.
Sakoda
Yoshihiro
Y
Kida
Hiroshi
H
D000372:Agglutination Tests; D000818:Animals; D000907:Antibodies, Bacterial / Q000097:blood; D002417:Cattle; D002418:Cattle Diseases / Q000382:microbiology*; D004797:Enzyme-Linked Immunosorbent Assay; D007921:Leptospira interrogans / Q000302:isolation & purification*; D007922:Leptospirosis / Q000662:veterinary*; D008986:Mongolia; D016036:Seroepidemiologic Studies
D000907:Antibodies, Bacterial