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Published on: February 23, 2014
Human pneumocystosis
R Singhal1, B R Mirdha, R Guleria
1Department of Microbiology, All India Institute of Medical Sciences, Ansari Nagar, New Delhi, India.
Abstract:
Pneumocystis is an atypical fungus causing pneumonia in immuno-compromised individuals. Though previously termed as Pneumocystis carinii, the recent taxonomy has considered human derived Pneumocystis to be a different species Pneumocystis jiroveci. The organism is the most common cause of opportunistic infections among patients with acquired immunodeficiency syndrome (AIDS) in developed countries. Incidence of Pneumocystis pneumonia or pneumocystosis in developing countries including India continues to be low. Microscopy of appropriate clinical samples has been the mainstay of diagnosis of pneumocystosis. Amplification techniques are now being evaluated for detection of P. jiroveci. This review attempts to give a recent update on P. jiroveci with special focus on epidemiology, taxonomy, current diagnostic modalities and recommended immuno-prophylaxis.
Insights
Pneumocystis jiroveci causes pneumonia in immunocompromised individuals, particularly those with acquired immunodeficiency syndrome (AIDS). This review updates on its epidemiology, diagnosis, and prevention.
Area of Science:
- Medical Mycology
- Infectious Diseases
- Immunology
Background:
- Pneumocystis jiroveci, formerly Pneumocystis carinii, is an opportunistic fungal pathogen.
- It is a leading cause of pneumonia in immunocompromised individuals, especially those with AIDS.
- Incidence varies globally, with lower rates reported in developing countries like India.
Purpose of the Study:
- To provide an updated review of Pneumocystis jiroveci.
- To focus on epidemiology, taxonomy, diagnostic methods, and prophylaxis.
- To highlight current understanding and management strategies.
Main Methods:
- Literature review of recent studies on Pneumocystis jiroveci.
- Analysis of epidemiological data, taxonomic classifications, and diagnostic techniques.
- Evaluation of current immuno-prophylaxis recommendations.
Main Results:
- Pneumocystis jiroveci is the correct species name for the human-derived organism.
- Microscopy remains a primary diagnostic tool, with amplification techniques under evaluation.
- Global incidence data shows disparities, with lower prevalence in certain regions.
Conclusions:
- Accurate identification and understanding of P. jiroveci are crucial for managing opportunistic infections.
- Advancements in diagnostic and prophylactic strategies are essential for patient care.
- Continued research is needed to address global health disparities in pneumocystosis.
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