| serological survey of leptospirosis in sows with premature birth and stillbirth in chiba and gunma prefectures of japan. | 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 fr ... | 2002 | 12237523 |