Careers360 Logo

Popular Searches

    Study Help

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

    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.

    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.

    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.

      Subscribe to Membership Plan

      *Unlock all premium content and benefits:
      Read more from Latest Stories

      Careers360 helping shape your Career for a better tomorrow

      student

      250M+

      Students

      colleges

      30,000+

      Colleges

      exams

      500+

      Exams

      ebook

      1500+

      E-Books

      Download Careers360 App's

      Regular exam updates, QnA, Predictors, College Applications & E-books now on your Mobile

      • student
        250M+

        Students

      • colleges
        30,000+

        Colleges

      • exams
        500+

        Exams

      • ebook
        1500+

        E-Books

      • certification
        12000+

        Cetifications

      student
      Mobile Screen

      We Appeared in