Health does not simply mean the absence of disease or physical fitness. It could be defined as an abstate of complete physical, mental and social being and not merely an absence of disease or infirmity.
Hygiene is a science of health. It aims at preserving, maintaining and improving the health of an individual or the community as a whole. A balanced diet, personal hygiene, regular exercise, right attitude of mind and good habits are very important to maintain good health. Disease in a condition of disrupted or deranged functioning of one or more organs or systems of the body caused by infection, defective diet or heredity.
Every day we are exposed to various foreign bodies, including infectious agents like bacteria, viruses, etc . despite constant exposure to a variety of pathogens, most of us remain unhealthy. This is due to the fact that the human body has the ability to resist almost every type of foreign body. The system which protects us from various infectious agents is called immune system Resistance is the ability to ward off damage or disease to our defense mechanism.
Concept of Immunology :
Immunology is the science which deals with the study of the immune system, immune responses to foreign substances and there role in resisting infection.
The study of the structure and function of the immune system is called basic immunology. Other branches are Clinical immunology, organ transplantation, laboratory immunology, serology, etc. The human immune system consists of lymphoid organs tissue, widely distributed cells and molecules like antibodies.
The most peculiar characteristics of the immune system are :
- It can differentiate between self and nonself foreign molecule.
It posses immunological memory.
About the CORONAVIRUS :
The coronavirus is basically a family of viruses. The first symptoms of the novel coronavirus where found isareereereginaiin in n ted the fish market of Wuhan from China Now it is spreading all over the world.
Its mortality rate is low but its contagious rate is very high. More than 1 lakhs people get infected by this novel CORONAVIRUS.
So, more precautions should be taken about it by cleaning your hands, wearing N-19 musk, using sanitizers and so on.
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