A two-year-old Japanese native ox died suddenly after it was in slight depression for two days.
Bacteriological examination on it and a very large number of Salmonella organisms were detected in pure form its spleen, liver, and blood. It was confirmed that these organisms were identical with Salmonella senftenberg. When agglutination tests were carried out with the serum of the ox and the isolated organisms, as antigen, the “O” and “H” agglutination titers were 1: 1, 600 and 1: 1, 600-3, 200, respectively. As a result, it was made clear that the ox had been infected with the isolated organisms.
