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 …

Read more

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 …

Read more

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

Pin point beta-haemolytic colony of Streptococcus pyogenes (group A streptococci) on blood agar of throat swab culture

Introduction of Thorat Swab Culture and Sensitivity Thorat swab culture and sensitivity is a medical diagnostic procedure used to identify the causative agents of infections in the throat and determine their sensitivity to various antibiotics. It is commonly performed when a patient presents with symptoms …

Read more

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 …

Read more

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. …

Read more

Herpes Simplex Virus (HSV): Introduction, Morphology, Pathogenicity, Lab Diagnosis, Treatment, Prevention, and Keynotes

Tzanck Smear- Positive of Herpes Simplex Virus (HSV)

Introduction Herpes Simplex Virus (HSV) is a common and highly contagious virus that infects humans. It belongs to the family Herpesviridae and is characterized by its ability to establish a lifelong infection in the host. HSV exists in two main types: HSV-1 and HSV-2. Transmission: …

Read more

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

Mycobacterium tuberculosis colony morphology on LJ medium

Introduction Mycobacterium tuberculosis is a bacterium that causes tuberculosis (TB), a contagious infectious disease primarily affecting the lungs but can also affect other parts of the body. TB has been a significant public health concern worldwide, causing illness and death for thousands of years. Key …

Read more

Polymerase Chain Reaction (PCR): Introduction, Principle, Types, Application, and Keynotes

Amplicons or DNA or RNA fragments of amplification or replication events

Introduction Polymerase Chain Reaction, commonly known as PCR, is a powerful and widely used molecular biology technique that allows for the amplification of specific DNA sequences. Developed by Kary B. Mullis in 1983, PCR revolutionized the field of genetics and has become an essential tool …

Read more