Small Colony Variants: Introduction, Morphology, Pathogenicity, Lab Diagnosis, Treatment, Prevention, and Keynotes

Small Colony Variants on CLED agar

Introduction Small Colony Variants (SCVs) are a subpopulation of bacteria that grow slowly and form unusually small colonies on culture media. They are most commonly described in Staphylococcus aureus, but also occur in Pseudomonas aeruginosa, Escherichia coli, and Listeria monocytogenes. SCVs are associated with chronic, …

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

Prototheca in Gram staining

Introduction Morphology Prototheca exhibits a unique morphology in cultural media. It forms smooth, creamy colonies on SDA. Moreover, its colonies remain non-filamentous. It produces spherical or oval cells in microscopic preparations. Furthermore, cells display a thick, refractile wall. In addition, internal endospores are occasionally arranged …

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Top 10 Viral Pathogens- List with Short Descriptions, and Footage

Western Blot- Positive for Human Immunodeficiency Virus (HIV)

List of Top 10 Viral Pathogens Short Description of Top 10 Viral Pathogens 1. Influenza Virus (Flu Virus) 2. Human Immunodeficiency Virus (HIV) 3. Hepatitis B Virus (HBV) 4. Hepatitis C Virus (HCV) 5. SARS-CoV-2 (COVID-19 Virus) 6. Dengue Virus 7. Human Papillomavirus (HPV) 8. …

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Candidiasis-Introduction, Types, Signs and Symptoms, Causative Agent, Laboratory Diagnosis, Treatment, Prevention and Control, and Keynotes

Candida albicans growth on SDA after 2 days of incubation

Introduction Candidiasis is an infection caused by Candida fungi, commonly Candida albicans. These fungi naturally live on the skin and inside the body, like in the mouth, throat, gut, and vagina, without causing problems. However, if the environment inside the body changes or the immune …

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Brucella Antibody Test: Introduction, Test Result, Test Method, Clinical Significane, and Keynotes

Brucella Agglutination Test

Introduction The Brucella antibody test is a diagnostic test used to detect antibodies against Brucella bacteria in a person’s blood. Brucella species are the causative agents of brucellosis, a zoonotic infectious disease that can be transmitted from animals to humans. Commonly known as “undulant fever” …

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