Lesson 4 : Transmissible Disease
Main content
Knowledge and understanding on transmissible diseases which cause family health and community problems.
How to prevent infection and spread of these diseases by proper prevention and treatment.
Expected learning outcome
1. Knowledge and understanding of transmissible diseases which cause family health and community problems.
2. Knowledge and understanding of prevention and treatment of these diseases.
Transmissible diseases, their causes, symptoms, prevention and treatment
Transmissible disease, also known as infectious disease, refers to human or animal illnesses resulting from the infection, presence and growth of germs. Transmission of an infectious disease may occur through several mechanisms both directly and indirectly.
Medical research found that those germs are pathogenic biological agents such as viruses, bacteria, fungi or prions, which are aberrant proteins. These pathogens are the main cause of the illness. Both of them are everywhere which causes advantages and disadvantages but it was found that the cause of diseases is related to heredity, while other diseases are brought onto oneself.
1. Many infections are transmitted from one person to another by proximity or contact with an infected person. Examples of infectious diseases transmitted in this way include influenza, some types of dermatitis and eye infections.
2. Other infections are transmitted by sexual activities. Such infections include venereal diseases, or Sexually Transmitted Diseases (STD) and HIV. Using preventive measures and having sex with a single partner, wife or husband can prevent the transmission of these diseases.
3. Still other infections are transmitted by biological or mechanical vectors, such as rodents and arthropods. Examples of a biological vector are mosquitoes which transmit dengue fever and malaria to humans, the rat flea is a transmitter of bubonic plague, and an example of a mechanical vector is the rat which transmits Leptospirosis through its urine to human.
