# A Case of Christensenella hongkongensis and Bacteroides fragilis Group Bacteremia Secondary to Diverticulitis

**Authors:** Kento Goto, Mai Suzuki, Yoshinori Kanai, Toshio Naito

PMC · DOI: 10.7759/cureus.83008 · 2025-04-25

## TL;DR

A rare case of blood infection caused by Christensenella hongkongensis in an elderly man with diabetes is reported.

## Contribution

This case highlights Christensenella hongkongensis as a rare cause of bacteremia linked to diverticulitis.

## Key findings

- Christensenella hongkongensis was identified as the causative agent through 16S rRNA gene sequencing.
- The infection occurred in a 79-year-old man hospitalized for diabetes education.
- The case suggests a possible link between diverticulitis and this rare bacteremia.

## Abstract

Anaerobic Gram-positive rod bacteremia is typically linked to organisms such as Clostridium perfringens or contamination, but can occasionally be caused by less common microorganisms. Here, we present a case of bacteremia caused by Christensenella hongkongensis, identified through 16S rRNA gene sequencing, in a 79-year-old man who developed a fever during hospitalization for diabetes education.

## Linked entities

- **Diseases:** diabetes (MONDO:0005015)
- **Species:** Christensenella hongkongensis (taxon 270498), Bacteroides fragilis (taxon 817)

## Full-text entities

- **Diseases:** diabetes (MESH:D003920), fever (MESH:D005334), bacteremia (MESH:D016470), Bacteroides fragilis Group Bacteremia (MESH:D001442), Diverticulitis (MESH:D004238)
- **Species:** Clostridium perfringens (species) [taxon 1502]

## Figures

3 figures with captions in the complete paper: https://tomesphere.com/paper/PMC12103945/full.md

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Source: https://tomesphere.com/paper/PMC12103945