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Article
June 1942

DISTRIBUTION OF SPECIFIC TYPES OF HEMOLYTIC STREPTOCOCCI IN EIGHT HUNDRED AND NINETEEN CASES OF INFECTION

Author Affiliations

BOSTON; SAN FRANCISCO; FITCHBURG, MASS.; BOSTON

From the Thorndike Memorial Laboratory, Second and Fourth Medical Services (Harvard) and the South Department, Boston City Hospital, and the Department of Medicine, Harvard Medical School.

Arch Intern Med (Chic). 1942;69(6):952-973. doi:10.1001/archinte.1942.00200180023002
Abstract

In two previous papers by two of us (L. A. R. and C. S. K.) and an associate1 it was pointed out that hemolytic streptococci of groups A, B and C can be readily distinguished by the specific precipitin method of Lancefield2 and that they also give distinctive types of hemolysis in standard poured blood agar plates.1a Group A hemolytic streptococci are made up of a number of specific types, which may be distinguished by appropriate serologic methods.3 For this purpose two procedures have been used. (1) the slide agglutination method of Griffith4 and (2) the precipitin method of Lancefield.2 Of the two, the slide agglutination method has had wider use. Most of the reports concerning the distribution of specific types of hemolytic streptococci in human disease have been made from England5 and Australia,6 but a few have appeared from Japan,7 Germany8 and the United States.9 In

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