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Updated: Jun 19, 2026
09:11
Capsular Serotyping of Streptococcus pneumoniae by Latex Agglutination
Published on: September 25, 2014
STUDIES ON INDIFFERENT STREPTOCOCCI : I. SEPARATION OF A SEROLOGICAL GROUP-TYPE I
1Hospital of The Rockefeller Institute for Medical Research.
The Journal of Experimental Medicine
|October 30, 2009
Summary
A serological study identified a homogeneous group of indifferent streptococci, designated Type I, which ferment inulin and salicin. Other strains form Group X, showing varied reactions and potential for new type discovery.
Area of Science:
- Microbiology
- Immunology
- Bacteriology
Background:
- Indifferent streptococci represent a diverse group of bacteria.
- Accurate classification is crucial for understanding their role in health and disease.
Purpose of the Study:
- To classify strains of indifferent streptococci using serological methods.
- To identify homogeneous groups within these bacteria.
Main Methods:
- Serological analysis of a large number of indifferent streptococci strains.
- Fermentation testing for inulin and salicin.
Main Results:
- A large, homogeneous serological group, designated Type I, was identified.
- Type I strains consistently ferment inulin and salicin.
- Remaining strains (Group X) showed heterogeneous fermentation patterns and did not react strongly with Type I serum.
Conclusions:
- Type I represents a distinct serological group of indifferent streptococci.
- Group X is heterogeneous and may contain undiscovered streptococcal types.
- Further subtype differentiation within Type I may be possible.
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