Pseudallescheria/Scedosporium complex species: From saprobic to pathogenic fungus

Area of Science:

• Mycology and Infectious Diseases
• Medical Microbiology
• Epidemiology

Background:

• Scedosporiosis is an emerging fungal infection caused by Pseudallescheria/Scedosporium complex (PSC) species.
• PSC infections are globally prevalent and associated with high mortality in both immunocompromised and immunocompetent individuals.
• These fungi are found in human-impacted environments, highlighting their cryptic ecology and distribution.

Purpose of the Study:

• To comprehensively review the characteristics of PSC species.
• To elucidate the mode of transmission, ecology, prevalence, and global epidemiology of Scedosporiosis.
• To enhance awareness among clinicians and microbiologists, particularly in endemic regions, and stimulate further research.

Main Methods:

• Literature review of existing studies on Scedosporiosis.
• Synthesis of data on PSC species identification, clinical manifestations, and environmental sources.
• Analysis of global prevalence and epidemiological trends.

Main Results:

• PSC species are significant opportunistic pathogens with a broad geographic distribution.
• Infections range from superficial to life-threatening invasive diseases.
• Environmental contamination and human activities contribute to PSC transmission.

Conclusions:

• Increased awareness and understanding of Scedosporiosis are crucial for timely diagnosis and effective management.
• Further research is needed to address knowledge gaps in PSC biology, diagnostics, and treatment strategies.
• Global surveillance and interdisciplinary collaboration are essential to combat this emerging fungal threat.