A COMPARISON OF ANTIGENIC STRUCTURE AND PHAGE PATTERN WITH BIOCHEMICAL PROPERTIES OF STAPHYLOCOCCUS AUREUS STRAINS ISOLATED FROM SHEEP

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Abstract
Of 84 S. aureus strains isolated from the anterior nares of healthy sheep and from the udders of ewes suffering from purulent mastitis, the 89% belonging to the C biotype contained agglutinogen h2 and polysaccharide A.beta.. Of the C biotype strains, 95% were lysed by the bovine phage 78, the human phage set giving only weak reactions at RTD .times. 100. Two pigment-negative variants and 3 unclassified strains gave similar results while 3 A biotype strains and one E biotype strain were definitely different. The close correlation between biochemistry, serology and phage typing substantiates the practical usefulness of the subdivision of S. aureus into biotypes.

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