1887

Abstract

Summary

A series of 698 strains of group A -haemolytic streptococci (GAS) isolated from cildren with streptococcal pyoderma was tested for production of serum opacity factor (OF)and nicotinamide adenine dinucleotide glycohydrolase (NADase). OF was produced by 37% of strains and 40% produced NADase. Classification based on various combinations of OF and NADase reactions showed that 58% belonged to enzyme group e1 and 34% to e2. Correlation with T and M types showed the possible use of this means of classification as an epidemiological marker for GAS. The specificity of such a system in the further classification of various T types of GAS in epidemiological studies, in the light of antigenic variation among M types, is described.

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/content/journal/jmm/10.1099/00222615-27-2-141
1988-10-01
2022-08-14
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