A vaccine activates our immune system without making us sick . Many dangerous infectious diseases can be prevented in this simple and effective way. A vaccine activates our immune system without making us sick.
What is the importance of vaccination Class 8?
A vaccine (or immunization) is a way to build your body’s natural immunity to a disease before you get sick . This keeps you from getting and spreading the disease. For most vaccines, a weakened form of the disease germ is injected into your body.
What is the importance of vaccination Class 9?
immunisation by taking vaccines. Vaccines provide immunity from infectious diseases like tetanus, diphtheria, whooping cough, measles, polio etc . Our body has an immune system which fights microbial infection. When this system first sees an infectious microbe, it kills the microbe and remembers it.
What is the principle of vaccination Class 9?
Immunity is the biological state of being able to resist disease or a toxin: the primary objective of vaccination is to induce an immunological memory against specific diseases , so that if exposure to a disease-causing pathogen occurs, the immune response will neutralise the infection or toxins it releases before ...
What type of disease can be prevented through vaccination?
Vaccines help prevent infectious diseases and save lives. Vaccines are responsible for the control of many infectious diseases that were once common in this country, including polio, measles, diphtheria, pertussis (whooping cough), rubella (German measles), mumps, tetanus, and Haemophilus influenzae type b (Hib).
What is the principle of vaccination Class 8?
A vaccine works by training the immune system to recognize and combat pathogens , either viruses or bacteria. To do this, certain molecules from the pathogen must be introduced into the body to trigger an immune response. These molecules are called antigens, and they are present on all viruses and bacteria.
What is the definition of vaccine for Class 8?
Vaccination is the practice of artificially introducing germs or germ substances into the body for developing resistance against a particular diseases . Usually, the vaccine or germ is introduced into the body by injection and sometimes orally.
What is a vaccine Grade 8?
About Vaccine
A vaccine is a substance that is used for the production of antidotes in the body and provides immunity against one or a few diseases. In biological terms, a vaccine is defined as a biological and formulated preparation to provide acquired immunity for a particular disease.
What are the basic principles of vaccination?
The principle of vaccination is to induce protection against a pathogen by mimicking its natural interaction with the human immune system . The vaccine reduces the risk of complications and mortality following subsequent exposure to an infectious agent.
What are the 4 types of vaccines?
There are four categories of vaccines in clinical trials: whole virus, protein subunit, viral vector and nucleic acid (RNA and DNA) .
What is the principle involved in vaccination?
The main principle of vaccination is the proactive induction of a protective immune response by mimicking the natural interaction of an infectious pathogen (bacteria, viruses, etc.) with the human immune system (Fig. 1).
What are the six killer diseases of a child?
Of great importance to public and child health are the vaccines against the so-called six killer diseases of childhood- measles, pertussis, diphtheria, tetanus, tuberculosis and poliomyelitis .
How does a vaccine work?
Vaccines contain either killed or weakened versions of the virus that causes the disease or a small part of it, such as a protein or nucleic acid. When you get a vaccine, your immune system recognises these as foreign. It responds by creating memory cells and antibodies that protect you against future infection.
What is the concept of immunization?
Immunization (or vaccination) protects people from disease by introducing a vaccine into the body that triggers an immune response, just as though you had been exposed to a disease naturally.
What is vaccine very short answer?
Definition of Terms
Vaccine: A preparation that is used to stimulate the body’s immune response against diseases . Vaccines are usually administered through needle injections, but some can be administered by mouth or sprayed into the nose.
What is vaccine in simple words?
A vaccine is a type of medicine that trains the body’s immune system so that it can fight a disease it has not come into contact with before. Vaccines are designed to prevent disease, rather than treat a disease once you have caught it.
