Antibiotic susceptibility and biochemical properties of Streptococcus faecalis strains reacting with both D and G antisera.

B.R. Birch; M.G.L. Keaney; L A Ganguli

doi:10.1136/jcp.37.11.1289

November 1, 1984Journal of Clinical PathologyOpen Access

Antibiotic susceptibility and biochemical properties of Streptococcus faecalis strains reacting with both D and G antisera.

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Key Points

To examine the biochemical properties and antibiotic susceptibility patterns associated with Streptococcus faecalis strains that react simultaneously with group D and group G antisera.
Serologically evaluated 60 consecutive clinical isolates of Streptococcus faecalis using streptococcal grouping sera D and G.
Tested isolates for haemolysin production, delayed sorbitol fermentation, and antimicrobial resistance to erythromycin, tetracycline, and trimethoprim.
Thirty-one of 60 isolates (51.7%) demonstrated dual serological reactivity with both group D and group G antisera.
Dual reactivity correlated closely with haemolysin production and delayed fermentation of sorbitol.
Cross-reacting isolates showed a strong positive correlation with antimicrobial resistance to erythromycin, tetracycline, and trimethoprim.

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Implication

Laboratory analysis reveals dual D and G antisera cross-reactivity links to multidrug resistance in Streptococcus faecalis isolates, indicating a distinct phenotype with elevated virulence.

Abstract

Thirty one of 60 consecutive isolates of Streptococcus faecalis produced a reaction in both D and G streptococcal grouping sera. A close correlation was found between this grouping reaction and haemolysin production, resistance to erythromycin, tetracycline, and trimethoprim, and delayed fermentation of sorbitol.

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Birch et al. (1984) studied this question.

synapsesocial.com/papers/6a8c3f095a23cb8fd8bbb5a7 https://doi.org/10.1136/jcp.37.11.1289

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Antibiotic susceptibility and biochemical properties of Streptococcus faecalis strains reacting with both D and G antisera.

Key Points

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Implication

Abstract

Discussion

Cite This Study

Antibiotic susceptibility and biochemical properties of Streptococcus faecalis strains reacting with both D and G antisera.

Key Points

Ask about this paper

Implication

Abstract

Discussion

Cite This Study

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