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Class 9 Biology: How Immunization Works And Why Vaccination Is A Must

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By Monica Bhatia
7 Mar'22  1 min read
Class 9 Biology: How Immunization Works And Why Vaccination Is A Must
Synopsis

Vaccines and medicines, both critical to health care, work at the opposite ends of infection – vaccination prevents it and medication cures it. But what is the Biology behind the process? How does introducing pathogens into the body protect it instead of causing disease? Based on the Class 9 Biology syllabus, this article explains how vaccination works, what the different types of vaccines are and why the process is critical for leaving the COVID-19 pandemic behind.

Read more
Class 9 Biology: How Immunization Works And Why Vaccination Is A Must
Synopsis

Vaccines and medicines, both critical to health care, work at the opposite ends of infection – vaccination prevents it and medication cures it. But what is the Biology behind the process? How does introducing pathogens into the body protect it instead of causing disease? Based on the Class 9 Biology syllabus, this article explains how vaccination works, what the different types of vaccines are and why the process is critical for leaving the COVID-19 pandemic behind.

Read more

We have all heard the saying, “prevention is better than cure”. It refers to the difference between vaccines and medicines. While medicines cure infections, vaccines prevent them.

Vaccination is the most cost-effective way to protect against infectious conditions. It has greatly reduced the incidence of many diseases. In some cases, vaccines have successfully eradicated diseases such as polio, smallpox which were once a threat to mankind.

The word vaccine is derived from the Latin word “vacca” meaning cow. This was used by Edward Jenner as the first vaccine developed was against the cowpox virus.

In simple language, a vaccine is any substance that is introduced into the body to prevent the disease produced by pathogens. The act of introducing vaccines is “vaccination”. After vaccination, the body gets ready to fight against infections and this is “immunization”.

Also Read,

Types Of Vaccines

When antigens enter our body, they trigger the formation of “antibodies”. An Antigen is an antibody generating agent. Thus vaccines work in a similar way. Vaccines are administered into our body to trigger antibody formation. Only pathogens are capable of this and vaccines, too, are actually pathogens too but either dead or weakened, that is, “attenuated”.

Thus, we can say that vaccination “programmes” the immune system to remember a particular pathogen and this is termed as “primary response”.

In traditional vaccines, the entire pathogen – dead or weakened – is inserted into the body. Newer vaccines are prepared using a different technique. The newer vaccines are DNA Vaccines.

A DNA vaccine transfects a specific antigen-coding DNA sequence into the cells of an organism as a mechanism to induce an immune response.

Thus vaccination saves lives and is necessary to survive serious infection.

The only way this COVID-19 pandemic will be over is through ample precaution and vaccination.So do not miss your jab. Save yourself and also people around you.

  • Health sciences
  • Infectious diseases
  • Health
  • Epidemiology
  • Medicine
  • Public health
  • Health care
  • Biology
  • Diseases and disorders

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