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Penicilliosis marneffei and pythiosis: emerging tropical diseases
1Division of Bacterial and Mycotic Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia 30333, USA.
Abstract:
Penicilliosis marneffei and pythiosis insidiosi are emerging infections in subtropical, tropical, and temperate areas of the world. Penicilliosis marneffei is endemic in several Southeast Asian countries and may be carried to other areas of the world by residents of these countries or visitors. Pythiosis occurs in humans and animals who frequent the aquatic habitats that harbor Pythium insidiosum. Although early diagnosis is important because of the high morbidity or mortality associated with these two diseases, the diagnosis of these infections can be difficult because their clinical and histologic features are not pathognomonic. Prompt diagnosis is a prerequisite to their appropriate treatment. Laboratory testing, involving cultural, histologic and immunologic methods, is necessary to establish an unequivocal diagnosis. The clinical presentation, epidemiology, diagnosis and treatment of these diseases are discussed.
Insights
Penicilliosis marneffei and pythiosis insidiosi are emerging fungal and oomycete infections. Early diagnosis is crucial due to high morbidity and mortality, but can be challenging, requiring laboratory confirmation.
Area of Science:
- Medical Mycology
- Infectious Diseases
- Tropical Medicine
Background:
- Penicilliosis marneffei and Pythiosis insidiosi are emerging infections globally.
- Penicilliosis is endemic in Southeast Asia, while pythiosis is linked to aquatic environments.
- Both infections pose significant health risks with high morbidity and mortality.
Purpose of the Study:
- To discuss the clinical presentation, epidemiology, diagnosis, and treatment of Penicilliosis marneffei and Pythiosis insidiosi.
- To highlight the challenges in diagnosing these emerging infections.
- To emphasize the importance of laboratory testing for definitive diagnosis.
Main Methods:
- Review of clinical, epidemiological, and laboratory data.
- Discussion of diagnostic methods including cultural, histologic, and immunologic techniques.
- Synthesis of current knowledge on the management of these diseases.
Main Results:
- Diagnosis can be difficult due to non-pathognomonic clinical and histologic features.
- Laboratory testing is essential for unequivocal diagnosis.
- Prompt diagnosis is a prerequisite for effective treatment.
Conclusions:
- Penicilliosis and pythiosis require a high index of suspicion for early detection.
- Comprehensive laboratory evaluation is critical for accurate diagnosis.
- Effective treatment strategies depend on timely and accurate diagnosis.
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