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Enteric group 15 (Enterobacteriaceae) associated with pneumonia

B H Bae, S B Sureka, J A Ajamy

Journal of Clinical Microbiology

|November 1, 1981

Summary

A novel gram-negative bacterium was identified in pneumonia patients with heart disease. This finding highlights potential new pathogens in vulnerable populations.

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Area of Science:

Microbiology
Clinical Microbiology
Infectious Diseases

Background:

Enterobacteriaceae are a family of gram-negative bacteria, some of which are opportunistic pathogens.
Pneumonia is a common lung infection, particularly in elderly individuals and those with underlying health conditions.
Enteric group 15 represents a less commonly characterized cluster within the Enterobacteriaceae family.

Observation:

A gram-negative, oxidase-negative, fermentative rod was isolated from two pneumonia patients.
The bacterium belonged to enteric group 15 of the Enterobacteriaceae family.
Both patients were elderly and had a history of chronic heart disease.

Findings:

The isolated bacterium, a member of enteric group 15, was identified in a mixed culture from two pneumonia cases.
The clinical presentation involved elderly patients with pre-existing chronic heart disease, suggesting a potential link between the bacterium and patient vulnerability.
The organism's characteristics (gram-negative, oxidase-negative, fermentative rod) aid in its identification and classification within the Enterobacteriaceae.

Implications:

This isolation suggests that enteric group 15 bacteria may be an underrecognized cause of pneumonia in specific patient populations.
Further research is warranted to understand the pathogenicity and clinical significance of this bacterium.
Identification of novel pathogens is crucial for developing targeted diagnostic and therapeutic strategies for infectious diseases.

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