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Massilia sp. isolated from otitis media.

Moo Kyun Park¹, Hee Bong Shin

¹Department of Otolaryngology-Head and Neck Surgery, Soonchunhyang University, Bucheon Hospital, Bucheon, Republic of Korea. aseptic@schmc.ac.kr

International Journal of Pediatric Otorhinolaryngology

|December 6, 2012

Summary

A novel Massilia species bacterium was identified in a patient with otitis media, a rare occurrence not previously reported in otitis media cases. This finding expands the known spectrum of bacteria associated with middle ear infections.

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Area of Science:

Microbiology
Infectious Diseases
Otology

Background:

Otitis media is commonly caused by specific bacterial pathogens like Streptococcus pneumoniae and Haemophilus influenzae.
Established diagnostic methods for otitis media typically identify known causative agents.

Observation:

A gram-negative, rod-shaped, non-spore-forming bacterium was isolated from middle ear effusion following tympanocentesis in a patient diagnosed with otitis media.
16S rRNA gene sequencing identified the isolated strain (CCUG 43427AT) as Massilia sp. with 99.7% similarity.

Findings:

This marks the first reported isolation of a Massilia species from a human otitis media case.
Massilia species are typically found in environmental sources like soil and air, and in immunocompromised patients.

Implications:

This case report introduces Massilia sp. as a potential, albeit rare, pathogen in otitis media.
Further research is warranted to understand the pathogenicity and clinical significance of Massilia species in otological infections.