Source of Infection and Types of Reservoirs
The starting point for the occurrence of a communicable disease is the existence of a reservoir or source of infection. The source of infection is defined as “the person, animal, … Read more
Sagar Aryal, PhD
Endemic Diseases- Definition, Types, Examples, Control
Communicable diseases are termed endemic when they have a relatively stable pattern of occurrence in a given geographical area or population group at the relatively high prevalence and incidence. It … Read more
Disease Prevention- Definition, Levels, Approaches, Key Components
Disease prevention is a procedure through which individuals, those with risk factors for a disease or without the risk factors, are treated in order to prevent a disease from occurring. … Read more
Branches of Epidemiology
Molecular Epidemiology Disaster Epidemiology Forensic Epidemiology Environmental Epidemiology Travel Epidemiology Occupational Epidemiology References
Lower and Higher Invertebrates with their differences
The invertebrates are usually classified as Lower Invertebrates and Higher Invertebrates. Lower Invertebrates The lower invertebrates are simple in body organization. They are generally small in size. These are thought … Read more
Characteristics of Invertebrates with examples
Habitat Numerical Strength Shape Size Symmetry Grade of Organisation Germ Layers Simple Integument Locomotion Segmentation Living Endoskeleton Coelom Dorsal gut Digestive System Circulatory System Respiratory System Excretory Mechanisms Nervous System … Read more
24 Differences between Invertebrates and Vertebrates
The animal kingdom has been divided into two major groups: Invertebrates (Non-Chordates) and Vertebrates (Chordates). Invertebrates are those that do not possess a vertebral column or backbone while Vertebrates are … Read more
Digestion and Absorption of Carbohydrates, Proteins and Fats
Carbohydrates, fats, and proteins are the major nutrients the body needs for growth, repair, movement, and maintaining tissue and organ function. These macromolecules are broken down and absorbed into the … Read more
Active vs. Passive Transport: 18 Differences, Examples
Active and passive transport are the two main biological process which plays an important role in supplying nutrients, water, oxygen, and other essential molecules to cells and also by removing … Read more
Oncogenic Viruses- An Overview
Viruses are intracellular pathogens that reproduce only in the living cell and manipulate the cellular machinery to produce more viruses. Viral replications can affect the cellular genes of the host … Read more