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Communicable Diseases

Ancient History of Leprosy

Ancient History of Leprosy Kushtha in ancient Indian medicine was not limited to what is called leprosy today. It was a broad term used for several chronic skin diseases. Mahakushtha or Maharog meant a severe or major form of Kushtha; therefore, it is not correct to assume that every condition described as Kushtha in ancient […]

Communicable Diseases

Life cycle of microbacterium leprae

Mycobacterium leprae (Hansen’s bacillus) is an obligate intracellular, acid-fast, rod-shaped bacterium that causes leprosy (Hansen’s disease). Unlike most bacteria, it has never been successfully cultured on artificial media and has an extremely slow replication rate and highly host-dependent life cycle centered on macrophages and Schwann cells. with a doubling time of about 12 to 14 […]

Communicable Diseases

Mycobacterium leprae: 4 Critical Structural Components

Mycobacterium leprae (the causative agent of leprosy/Hansen’s disease) is a straight or slightly curved, slender, acid-fast bacillus with a distinctive multilayered cell envelope and several structural adaptations for intracellular survival. Gross morphology and basic features Mycobacterium leprae in lepromatous leprosy, seen by modified AFB Wade Fite staining at 100X magnification. Microscopic view of numerous red, […]

Public Health & Epidemics

Leprosy: 5 Critical Facts on Hansen’s Disease & MDT

Leprosy (Hansen’s Disease) is a chronic, curable infectious disease caused mainly by Mycobacterium leprae, affecting skin, peripheral nerves, mucosa of the upper respiratory tract, and eyes; early diagnosis and multidrug therapy (MDT) prevent disability and stop transmission. 📌 Key Takeaways: Leprosy (Hansen’s Disease) Definition: Causative Agents and Transmission: 1. Causative agent 2. Mode of Transmission: […]

Public Health & Epidemics

Impact of Stratified Water on Deep-Sea Biodiversity Recovery 

Stratified water columns strongly constrain deep-sea biodiversity recovery by limiting the supply of oxygen and organic matter to the seafloor, slowing recolonization after disturbances such as trawling, mining, or oxygen depletion events.   How stratification affects deep-sea ecosystems Water column stratification creates stable layers (thermocline, pycnocline) that inhibit vertical mixing between surface and deep waters. […]

Public Health & Epidemics

Dissolved Oxygen Levels in Water: 5 Critical Impacts

Dissolved oxygen levels in water (DO) in water bodies are a major public health and environmental concern. When oxygen levels fall—often due to rising water temperatures, organic pollution from sewage and agricultural waste, and nutrient-driven algal blooms—aquatic life becomes stressed or dies, leading to loss of biodiversity and reduced fishery productivity. Low DO waters can […]

Public Health & Epidemics

Comprehensive Primary Health Care: 5 Critical Benefits

CPHC most commonly stands for Comprehensive Primary Health Care in public health and health-system contexts (especially in India and many LMICs). In other settings, the same acronym is used for different organizations (e.g., computing or palliative-care bodies), but the definitions and goals below refer to the public-health meaning, which matches your background.  Meaning of Comprehensive […]

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