An attempt was made by the authors to survey the distribution of C. renale in apparently healthy Korean male cattle and dairy cattle, and to determine the types of C. renale isolated in Korea.
A total of 153 urine samples and 240 vaginal smears were collected from 253 cows for examination, and 124 urine samples of Korean cattle were investigated. Of them, one case showed cystitis symptoms. The results obtained are summarized as follows :
1. The organism was detected from 8(6.5%) of 124 specimens of Korean cattle. The isolates studied in this survey belonged to type Ⅰ (4.1%), type Ⅲ (1.6%) and untypable(0.8%) of C. renale.
2. The rate of isolation of C. renale was 7.5% (19 of 253 individuals) in apparently healthy cows. The 26 strains isolated from the 19 dairy cattle belonged to type Ⅰ (38.5%), type Ⅱ (26.9%), type Ⅲ (24.6%) and untypable(11.5%) in the serological classification. From the cow with clinical cystitis, type Ⅲ strain was isolated.
3. It appears that the isolation rate depends on the history of pasture rather than the number of cattle; higher percentages were detected from the pasture which had fed for longer period.
4. From the findings mentioned above, it is clear that three types of C. renale were distributed in the apparently healthy Korean and dairy cattle in Korea. And this is the first report on the isolation and distribution of C. renale in Korea.
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