Potential pathogenicity of Inquilinus limosus in a pediatric patient with cystic fibrosis
T Spencer Poore1, Isabel Virella-Lowell1,2,3, Jennifer S Guimbellot1,2,3
1Department of Pediatrics, University of Alabama, Birmingham, Alabama.
Presentation:
Patient is a 6-year-old male with CF, MRSA colonization, and pancreatic insufficiency that presented with worsening ppFEV1 and systemic symptoms despite multiple interventions. BAL grew NTM, Stenotrophomonas maltophilia, and Inquilinus limosus, a rare organism found in patients with CF.
Course:
I. limosus treatment was deferred. Despite treatment of other pathogens, symptoms worsened. I. limosus was targeted with meropenem, amikacin, and ciprofloxacin along with clindamycin for MRSA colonization. Within weeks, symptoms had resolved with ppFEV1 improvement.
Discussion:
This case discusses the importance of a rare organism in the CF population. Targeting I. limosus was key to recovery, revealing its potential pathogenicity.
Insights
A rare bacterium, Inquilinus limosus, was successfully treated in a pediatric cystic fibrosis (CF) patient, leading to symptom resolution and improved lung function. This highlights the importance of identifying and targeting uncommon pathogens in CF care.
Area of Science:
- Clinical microbiology
- Infectious diseases
- Pediatric pulmonology
Background:
- Cystic Fibrosis (CF) patients often experience polymicrobial infections, complicating management.
- MRSA colonization and pancreatic insufficiency are common comorbidities in CF.
- The role of rare organisms like Inquilinus limosus in CF exacerbations is not well-defined.
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