Bacteriophage Typing of Coagulase-Negative Staphylococci Isolated from Bovine Milk

概要

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The purpose of the present study is to determine whether the phages of the N.C.T.C. phage-set and Davidson's phage-set could be utilized in typing 417 coagulase-negative staphylococci from bovine milk and to device a new phage-set that would yield higher rate of typing than the two methods. The results are summarized as follows: 1) Rate of phage typing by the N.C.T.C. and Davidson's phage-set were 4.3% and 1.4%, respectively. 2) Only one phage was induced among 50 coagulase-negative staphylococci by irradiation with ultraviolet. 3) Sixty-five phages were isolated from sewage of dairy farms. Of these 9 phages were selected as typing phages and divided into 4 groups. We called these 9 phages "the provisional typing-set". 4) Relatively high typing rate, 54.2% (226 of 417 strains), attained by this typing-set proves that this typing-set is more readily applicable than above two phage-sets for coagulase-negative staphylococci from bovine milk.
大阪府立大学の論文
1981-03-31