# Case Report: A rare case of community-acquired Roseomonas mucosa sepsis that presented with persistently normal host-response biomarkers

## TL;DR

A 59-year-old woman with sepsis caused by Roseomonas mucosa was successfully treated with meropenem despite normal biomarker results.

## Contribution

This case report highlights a rare instance of Roseomonas mucosa sepsis with normal host-response biomarkers.

## Key findings

- Initial metagenomic analysis suggested Pseudomonas aeruginosa, but blood culture identified Roseomonas mucosa.
- The patient was successfully treated with meropenem after antimicrobial susceptibility testing.
- Host-response biomarkers remained negative despite septic shock progression.

## Abstract

Community-acquired Roseomonas mucosa sepsis can lead to significant morbidity and mortality if not diagnosed promptly. We report a case of a 59-year-old woman with community-acquired Roseomonas mucosa sepsis who presented with persistent fever progressing to septic shock, despite repeatedly negative host-response biomarker results. Initial metagenomic analysis of peripheral blood suggested Pseudomonas aeruginosa infection. However, a peripheral blood culture identified Roseomonas mucosa as the causative pathogen. She was cured after switching to meropenem according to blood cultures and antimicrobial susceptibility testing.