What do you mean by direct transmission of diseases ? List four ways by which direct transmission of diseases takes place.

Explanation

Direct Transmission. The pathogens of some diseases are carried directly to the human body without intermediate agents. It occurs in many ways-(i) Contact with Infected Persons (e.g., Chicken pox, Small pox, Syphilis, etc.) (ii) Droplet Infection by sneezing, coughing, spitting and talking (e.g., diphtheria, influenza, common cold, measles, tuberculosis, pneumonia, etc. (iii) Contact with Soil (e.g., bacteria responsible for tetanus). (iv) Animal Bites (e.g., rabies bite.) (v) Through Placenta (e.g., German measles and bacteria of syphilis can be carried from mother of foetus via placenta.)