| seroprevalence survey for anaplasma marginale-infection of austrian cattle. | a serologic survey study of 5,076 austrian cattle farming herds was carried out in the period of december 1988 till march 1990. one animal was randomly selected from each herd and the antibody titer against anaplasma marginale in blood serum samples was evaluated by means of the complement fixation test. the number of these tested blood samples was 3.6% of 140,081 cattle herd farms of austria. 109 (2.1%) of the tested animals showed positive titers (1:10) against anaplasma marginale, in relation ... | 1992 | 1621479 |