Opportunistic pathogen

Enterobacter cloacae complex: Introduction, Morphology, Pathogenicity, Lab Diagnosis, Treatment, Prevention, and Keynotes

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Enterobacter cloacae complex (ECC) colony morphology on CLED agar

Introduction The Enterobacter cloacae complex (ECC) is a group of closely related bacterial species, including Enterobacter cloacae, Enterobacter hormaechei, and others, that can cause a variety of infections, particularly in healthcare settings. ECC is a significant cause of nosocomial (hospital-acquired) infections, including bloodstream infections, pneumonia, and urinary …

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Klebsiella ozaenae : Introduction, Morphology, Pathogenicity, Lab Diagnosis, Treatment, Prevention, and Keynotes

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Klebsiella ozaenae colony morphology on CLED agar

Introduction of Klebsiella ozaenae Klebsiella pneumoniae subspecies ozaenae (Klebsiella ozaenae) is a Gram-negative bacterium (GNB), primarily associated with atrophic rhinitis (ozena), a chronic condition of the nasal cavity characterized by tissue thinning and unpleasant odor. It is also known as a normal inhabitant of the oral and …

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Paecilomyes marquandii-Introduction, Morphology, Pathogenicity, Lab Diagnosis, Treatment, Prevention, and Keynotes

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Conidia, conidiophores, and phialides of Paecilomyes marquandii in LPCB preparation of culture microscopic examination

Introduction of Paecilomyes marquandii Paecilomyces marquandii is a saprophytic fungus found in soil and decaying matter. Moreover, it sometimes acts as an opportunistic pathogen. Additionally, it infects immunocompromised patients. Furthermore, clinicians report emerging cases of this fungus in various clinical settings. Morphology The fungus forms …

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Staphylococcus sciuri- Introduction, Morphology, Pathogenicity, Lab Diagnosis, Treatment, Prevention, and Keynotes

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Staphylococcus sciuri Gram positive cocci in singles, pairs, chains and clusters in Gram stain of culture microscopic examination

Introduction Staphylococcus sciuri belongs to the coagulase-negative staphylococci (CoNS) group. Since it thrives in diverse environments, scientists often isolate it from animals, soil, and water. Moreover, it colonizes the skin and mucosal surfaces of humans and animals. Although it usually remains harmless, it can cause …

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Peptostreptococcus: Introduction, Morphology, Pathogenicity, Lab Diagnosis, Treatment, Prevention, and Keynotes

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Introduction Peptostreptococcus is a genus of anaerobic, Gram-positive cocci commonly found in the human body as part of the normal flora. Moreover, it resides in various locations, including the mouth, gastrointestinal tract, skin, and female genital tract. In addition, it plays a role in maintaining …

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Enterococcus avium-Introduction, Morphology, Pathogenicity, Lab Diagnosis, Treatment, Prevention, and Keynote

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Enterococcus avium colony morphology on CLED agar

Introduction Enterococcus avium is a Gram-positive bacterium commonly found in birds. However, it can also inhabit the gastrointestinal tracts of humans and animals. Although it is less prevalent than other Enterococcus species, E. avium has been identified as a nosocomial pathogen in humans. Notably, it …

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Citrobacter werkmanii-Introduction, Morphology, Pathogenicity, Lab Diagnosis, Treatment, Prevention, and Keynote

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Lactose fermenting colony of Citrobacter werkmanii

Introduction Citrobacter werkmanii is a gram-negative bacterium belonging to the genus Citrobacter. It is commonly found in the environment, including soil, water, and sewage. This bacterium is part of the normal flora of the human intestinal tract but can act as an opportunistic pathogen. C. …

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Pantoea agglomerans-Introduction, Morphology, Pathogenicity, Lab Diagnosis, Treatment, Prevention, and Keynote

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Pantoea agglomerans in Gram staining of culture

Introduction Pantoea agglomerans, a Gram-negative, facultative anaerobic bacterium, belongs to the Enterobacteriaceae family. Moreover, it is commonly found in soil, plants, and water. Interestingly, it plays a dual role as a plant symbiont and an opportunistic human pathogen. Additionally, P. agglomerans colonizes plant tissues and …

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