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

A step of sample inoculation on blood agar for Sputum Culture and Sensitivity

Introduction Sputum culture and sensitivity is a medical laboratory test used to identify and determine the susceptibility of bacteria or other microorganisms present in a patient’s sputum, a mixture of saliva and mucus coughed up from the respiratory tract. This diagnostic test is crucial in …

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

Introduction Trichomonas vaginalis is a parasitic protozoan that causes the sexually transmitted infection (STI) known as trichomoniasis. This unicellular organism primarily infects the urogenital tract in both men and women. Trichomoniasis is one of the most common curable STIs worldwide. Here are some key points …

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High Vaginal Swab (HVS) Culture and Sensitivity: Introduction, Report, Clinical Significance, Common Pathogens, and Keynotes

Introduction High Vaginal Swab (HVS) Culture and Sensitivity is a diagnostic test used to identify and analyze the microorganisms present in the vaginal region. It is an important tool in gynecology and obstetrics to diagnose and manage various vaginal infections, such as bacterial vaginosis, yeast …

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

Introduction Chlamydia trachomatis is a gram-negative bacterium and is an important human pathogen known for causing several diseases. It is an obligate intracellular bacterium, meaning it can only survive and reproduce inside host cells. C. trachomatis primarily infects epithelial cells of the mucous membranes in …

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Corynebacterium diphtheriae: Introduction, Morphology, Pathogenicity, Lab Diagnosis, Treatment, Prevention, and Keynotes

Corynebacterium diphtheriae colony morpholoy on 5% sheep blood agar after 48 hours of incubation

Introduction Corynebacterium diphtheriae is a gram-positive, rod-shaped bacterium that causes diphtheria, a highly contagious and potentially life-threatening respiratory infection. This bacterium was first identified and described by the German physician Edwin Klebs in 1883, and later confirmed by Friedrich Loeffler and Emil von Behring. The …

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

Introduction Mycoplasma hominis is a species of bacteria belonging to the Mollicutes class. It is a unique microorganism as it lacks a cell wall, making it one of the smallest self-replicating organisms known. Due to this feature, it has a pleomorphic appearance, taking various shapes, …

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Escherichia coli: Introduction, Morphology, Pathogenicity, Lab Diagnosis, Treatment, Prevention, and Keynotes

Greenish metallic sheen of Escherichia coli on Eosin Methylene Blue (EMB) Agar

Introduction Escherichia coli, often abbreviated as E. coli, is a gram-negative, rod-shaped bacterium belonging to the Enterobacteriaceae family. It is one of the most commonly studied and well-known bacteria, both because of its importance in scientific research and its relevance in various aspects of human …

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Citrobacter koseri: Introduction, Morphology, Pathogenicity, Lab Diagnosis, Treatment, Prevention, and Keynotes

Mucoid colony of Citrobacter koseri on CLED agar of urine specimen

Introduction Citrobacter koseri, formerly known as Citrobacter diversus, is a gram-negative bacterium belonging to the Enterobacteriaceae family. It is a facultative anaerobe, meaning it can grow both in the presence and absence of oxygen. The species name “koseri” is a tribute to the bacteriologist Leo …

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