Mycoplasma pneumoniae: Introduction, Morphology, Pathogenicity, Lab Diagnosis, Treatment, Prevention, and Keynotes

Introduction Mycoplasma pneumoniae is a unique type of bacteria that belongs to the class Mollicutes. What sets it apart from other bacteria is its lack of a cell wall, which is a characteristic feature of most bacterial species. This absence of a cell wall makes …

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E. aerogenes: Introduction, Morphology, Pathogenicity, Lab Diagnosis, Treatment, Prevention, and Keynotes

Enterobacter aerogenes colony morphology on CLED agar of urine culture

Introduction Enterobacter aerogenes is a bacterium belonging to the Enterobacteriaceae family, which includes several other important pathogens and opportunistic bacteria. E. aerogenes is a Gram-negative, rod-shaped bacterium that is commonly found in various environments, including soil, water, and the gastrointestinal tracts of humans and animals. …

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Pleural Fluid Culture and Sensitivity: Introduction, Report, Clinical Significance, Common Pathogens, and Keynotes

Pleural fluid for laboratory diagnosis

Introduction Pleural fluid culture and sensitivity is a diagnostic test used to identify and determine the antibiotic susceptibility of microorganisms present in the pleural fluid. The pleural fluid is a clear fluid that accumulates between the two layers of the pleura, the membrane that surrounds …

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Moraxella catarrhalis: Introduction, Morphology, Pathogenicity, Lab Diagnosis, Treatment, Prevention, and Keynotes

Gram negative cocci in pairs (diplococci) of Moraxella catarrhalis in Gram staining of culture microscopy at a magnification

Introduction Moraxella catarrhalis is a Gram-negative, aerobic bacterium that belongs to the Moraxellaceae family. It is a non-motile, non-spore-forming bacterium, and it is typically found in the upper respiratory tract of humans as a commensal organism. Though generally considered a commensal, M. catarrhalis can also …

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Chlamydia pneumoniae: Introduction, Morphology, Pathogenicity, Lab Diagnosis, Treatment, Prevention, and Keynotes

Introduction Chlamydia pneumoniae, also known as Chlamydophila pneumoniae, is a species of bacteria that belongs to the Chlamydiaceae family. It is an obligate intracellular pathogen, meaning it can only survive and replicate inside the cells of its host. It primarily infects the respiratory system, causing …

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Pericardial Fluid Culture and Sensitivity: Introduction, Report, Clinical Significance, Common Pathogens, and Keynotes

Introduction Pericardial fluid culture and sensitivity is a diagnostic test performed to identify and determine the antibiotic susceptibility of microorganisms present in the pericardial fluid. The pericardium is a protective membrane that surrounds the heart, and the pericardial fluid is a small amount of fluid …

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Staphylococcus saprophyticus: Introduction, Morphology, Pathogenicity, Lab Diagnosis, Treatment, Prevention, and Keynotes

Staphylococcus saprophyticus on Muller-Hinton agar (MHA) showing novobiocin resistance

Introduction Staphylococcus saprophyticus is a species of bacteria that belongs to the genus Staphylococcus. It is a Gram-positive, coagulase-negative, and facultative anaerobic bacterium. Like other staphylococci, S. saprophyticus typically appears in clusters under a microscope, which is characteristic of its name, derived from the Greek …

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Mycobacterium leprae: Introduction, Morphology, Pathogenicity, Lab Diagnosis, Treatment, Prevention, and Keynotes

Heavy load of acid fast bacilli (AFB) of Mycobacterium leprae in modified Ziehl-Neelsen staining of slit skin smear microscopy at a magnification of 1000X

Introduction Mycobacterium leprae is the bacterium responsible for causing leprosy, also known as Hansen’s disease. It is an ancient disease that has afflicted humans for thousands of years, and it continues to be a significant public health concern in some parts of the world. M. …

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