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Introduction Trichosporon is a genus of anamorphic, yeast-like basidiomycetous fungi widely distributed in nature, particularly in tropical and temperate regions. First identified by Beigel in 1865, it commonly exists as a saprophytic organism in soil, water, plants, and animal droppings. In humans, it is a …
Introduction The Acinetobacter baumannii complex (ABC) is a group of highly resilient, opportunistic Gram-negative bacteria that pose a critical threat in healthcare settings. Classified as an “ESKAPE” pathogen, it is a leading cause of severe hospital-acquired (nosocomial) infections. The World Health Organization (WHO) categorizes carbapenem-resistant …
Introduction Alcaligenes faecalis is a Gram-negative, aerobic, rod-shaped bacterium primarily found in water and soil, but also as a commensal in the human intestinal tract. While it is generally nonpathogenic, it is a significant opportunistic pathogen, particularly in hospital settings where it thrives in moist …
Introduction & Taxonomy Aspergillus terreus is a filamentous fungus increasingly recognized as a significant emerging opportunistic pathogen. It is uniquely distinguished from other common species by its intrinsic resistance to amphotericin B, its characteristic cinnamon-brown colony color, and the production of specialized spores called aleurioconidia. …
Introduction Acinetobacter haemolyticus is an aerobic, non-fermenting bacterium found in nature and hospital environments. It belongs to the Acinetobacter genus, frequently causing healthcare-associated infections. It is generally considered less virulent than Acinetobacter baumannii but is increasingly recognized in human infections. Morphology Pathogenicity Lab Diagnosis Treatment Prevention Keynotes Further Readings
Introduction Pichia kudriavzevii, formerly known as Candida krusei, is a unique budding yeast that holds a dual status as both a critical industrial organism and an emerging opportunistic pathogen. Taxonomy: It is the teleomorph (sexual state) of Candida krusei. It has also been historically known as Issatchenkia orientalis. …
Introduction Klebsiella aerogenes (formerly Enterobacter aerogenes) is an opportunistic Gram-negative, facultative anaerobic bacterium responsible for serious healthcare-associated infections (HAIs), including bloodstream infections and pneumonia. It is highly associated with antibiotic resistance (including XDR strains) and poor clinical outcomes. Morphology Pathogenicity & Virulence Factors Lab Diagnosis Treatment Prevention Keynotes …
Introduction Pathogenicity While typically considered a low-grade commensal, it causes serious infections primarily in immunocompromised patients or those with indwelling medical devices. Lab Diagnosis Treatment There are no official clinical breakpoints, so treatment is often guided by expert consultation and raw Minimum Inhibitory Concentration (MIC) values. Prevention Keynotes …