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Streptomyces pneumonia in an immunocompetent adult - a rare isolate
Muniza Bai1, Mahesh Babu Vemuri2, Madhusmita Mohanty Mohapatra1
1Jawaharlal Institute of Post Graduate Medical Education and Research, Dhanvantri Nagar, Gorimedu, Puducherry, India.
Abstract:
Streptomyces belongs to the Actinomycetes group of bacteria which are gram-positive non acid-fast bacilli, widely recognised for their potential to produce antimicrobials active against bacterial, mycobacterial, parasitic and fungal infections. They commonly cause cutaneous infections following traumatic inoculation. Visceral infections are relatively rare and limited to immunocompro-mised hosts. We describe a case of Streptomyces pneumonia in a healthy immunocompetent female, who when investigated for voluntary kidney donation, resulted in the isolation of Streptomyces species from bronchial wash cultures. Streptomyces, a potential pathogen in immunocompetent hosts is frequently underdiagnosed. Once isolated, both physicians and microbiologists should pay attention to differentiate true infection from contamination.
Insights
Streptomyces bacteria, known for producing antimicrobials, can cause pneumonia even in healthy individuals. This case highlights the importance of identifying Streptomyces infections, which are often underdiagnosed in immunocompetent hosts.
Area of Science:
- Microbiology
- Infectious Diseases
Background:
- Streptomyces, a genus of Actinomycetes bacteria, are recognized for their antimicrobial production.
- They typically cause cutaneous infections but visceral infections are rare, usually seen in immunocompromised individuals.
Observation:
- A healthy, immunocompetent female presented with pneumonia.
- Streptomyces species were isolated from her bronchial wash cultures during a kidney donation evaluation.
Findings:
- This case demonstrates Streptomyces pneumonia occurring in an immunocompetent host.
- The bacterium is identified as a potential pathogen in individuals without compromised immune systems.
Implications:
- Streptomyces infections in immunocompetent hosts may be underdiagnosed.
- Physicians and microbiologists must distinguish true Streptomyces infections from sample contamination.
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