[Leptospirosis in swine; observations on the serological diagnosis of Leptospira interrogans serotype bratislava].

Leptospirosis is considered to be an important cause of porcine reproductive failure. In this respect recently attention is paid to the possible role of Leptospira interrogans serotype bratislava (bratislava). In the present paper the results of serotype bratislava serology conducted on three farms are presented and discussed. On two of the farms no reproductive failure was observed. On the third farm with a high percentage of return to service a longitudinal search was done. No relation could be demonstrated between bratislava titers and reproductive failure.