Japanese Journal of Veterinary Research;Volume 17, Number 1-2

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CORYNEBACTERIUM RENALE PHAGE-TYPES AND THEIR EPIDEMIOLOGICAL SIGNIFICANCE

HIRAMUNE, Takashi;YANAGAWA, Ryo

Permalink : http://hdl.handle.net/2115/1920
JaLCDOI : 10.14943/jjvr.17.1-2.25

Abstract

Three phage types of Corynebacterium renale were obtained from 67 strains of C. renale type I, isolated mostly in Hokkaido, Japan, and Scotland and Uruguay. Two of the 3 phage-types were identical with those already reported by YANAGAWA et al. (1968). A new type phage (RP H4) was obtained. This phage was produced from a strain isolated from a cow with pyelonephritis symptoms in NA herd (Sapporo) and lysed all the strains isolated from cows in T herd (Hayakita). Phages RP H39 and RP H46,produced by the strains isolated in N herd (Hidaka) and similar in host range pattern to the previously reported phage RP 6,lysed 5 strains all derived from the same herd. In this herd, a relation was found between the lytic pattern and the sources of strains (barns). All the strains isolated from cows in A and F barns were resistant to phage RP 6,except one ; all the strains except one of B and C barns produced the same phage. These findings suggest that C. renale type I is distributed among cows of a very limited area, such as a herd or a barn. From the findings obtained, the importance of C. renale phage-types in relation to ecology of C. renale and epidemiology of C. renale infection was discussed.

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