Gardnerella vaginalis: Introduction, Morphology, Pathogenicity, Lab Diagnosis, Treatment, Prevention, and Keynotes

Introduction Gardnerella vaginalis is a Gram-variable bacterium that is considered to be a facultative anaerobe, meaning it can survive in both aerobic and anaerobic environments. It is the main causative agent of bacterial vaginosis (BV), a common vaginal infection in women of reproductive age. BV …

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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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Achromobacter xylosoxidans: Introduction, Morphology, Pathogenicity, Lab Diagnosis, Treatment, Prevention, and Keynotes

Gram negative rods (GNRs) or Gram negative bacilli (GNBs)of Achromobacter xylosoxidans in Gram staining of culture microscopy

Introduction Achromobacter xylosoxidans is a gram-negative, non-fermenting bacterium that belongs to the family Alcaligenaceae. It is an aerobic, rod-shaped bacterium known for its versatile metabolic capabilities and its widespread distribution in various environments, including soil, water, and hospital settings. Originally classified as Alcaligenes xylosoxidans, the …

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

Optochin sensitive Streptococcus pneumoniae

Introduction Streptococcus pneumoniae, commonly known as pneumococcus, is a bacterium that can cause a wide range of infections in humans. It is one of the most significant pathogens responsible for various diseases, particularly pneumonia, meningitis, and otitis media (middle ear infections). Characteristics: Transmission: Diseases caused …

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Enterococcus faecium: Introduction, Morphology, Pathogenicity, Lab Diagnosis, Treatment, Prevention, and Keynotes

Gram positive cocci in singles, pairs and chains of Enterococcus faecium in Gram staining of culture microscopy

Introduction Enterococcus faecium is a bacterium that belongs to the Enterococcus genus, which is a part of the Firmicutes phylum. It is a Gram-positive, facultative anaerobic coccus, typically occurring in pairs or short chains. Enterococci are commensal bacteria commonly found in the gastrointestinal tract of …

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