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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 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 Lactococcus garvieae is a Gram-positive, catalase-negative, non-spore-forming coccus, typically arranged in pairs or short chains. It belongs to the lactic acid bacteria group and is well known as a major pathogen in fish (lactococcosis). In humans, it is an emerging opportunistic pathogen, increasingly recognized …
Introduction Yeasts, especially Candida species, are among the most important causes of opportunistic fungal infections in humans. Accurate and rapid identification is crucial for guiding antifungal therapy and improving patient outcomes. Traditional phenotypic methods are time-consuming and often misidentify cryptic species. Matrix-Assisted Laser Desorption/Ionization Time-of-Flight …
Introduction Acinetobacter ursingii is a Gram-negative, non-fermentative, opportunistic bacterium belonging to the genus Acinetobacter. It is an uncommon species compared to Acinetobacter baumannii, but it has been increasingly recognized in healthcare-associated infections (HAIs). Reported cases include bacteremia, septicemia, pneumonia, urinary tract infections, and bloodstream infections, …
Introduction Accurate and timely identification of molds is essential for clinical microbiology, especially in cases of invasive fungal infections caused by Aspergillus, Fusarium, Scedosporium, Mucorales, and other filamentous fungi. Traditional methods based on morphology and phenotypic characteristics are slow, require expertise, and may misidentify cryptic …
Introduction Fungal infections represent a growing concern in both immunocompromised and immunocompetent individuals. Conventional identification methods, including culture, microscopy, and biochemical testing, often require several days and may lack sensitivity or specificity for certain opportunistic fungi. Molecular techniques such as PCR and sequencing have improved …
Introduction of Penicillium vs Paecilomyces Penicillium is a ubiquitous, saprophytic mold found in soil, air, and decaying organic matter. Known for producing the first antibiotic, penicillin, it is typically non-pathogenic but occasionally causes opportunistic infections in immunocompromised hosts. Paecilomyces (especially P. lilacinus and P. variotii) …