Every pathogen has some reservoir outside the body of the human being, where it remains without causing disease. It infects healthy persons through vectors, carriers or contact. Transmission of Pathogens: The pathogens of diseases are transmitted from the reservoir to a healthy person by two processes. 1. Direct transmission: Direct transmission occurs through several ways. (i) Direct Contact: If a [...]
1. Non-Communicable Diseases: These diseases are caused by some specific factors. They remain confined to a person and do not spread. Classification: (i) Degenerative Diseases: Normally heart, lungs and diseases of central nervous system occur due to insufficient growth of organs. (ii) Deficiency Diseases: These occur due to malnutrition. (iii) Allergies: Allergies occur due to hypersensitivity to foreign substances. (iv) [...]
The term ringworm or ringworms refers to fungal infections that are on the surface of the skin. The name is derived from the early belief that the infection was due to a worm, which it is not. Ringworm is a fungal infection in the skin. Nevertheless, the name ringworm remains. Some of these fungi produce round spots on the skin, [...]