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The Role of Immunizations in Preventing Infectious Diseases
Parents take various measures to ensure that the well-being of their children is protected. Taking their kids for immunization is one of the most cost-effective ways to protect children from contracting serious illnesses. Typically, immunization involves the injection of a vaccine in the body to trigger immunity or resistance against a deadly infectious disease (Bennett, Dolin & Blaser, 2014). This paper is a discussion of the role of immunizations in preventing infectious diseases.
Immunization is provided through the use of vaccines which stimulates the immune system to protect an individual from a disease. Everyone has an immune system which consists of cells, glands, organs, and fluids. It is designed to fight invasion by bacteria and viruses. Upon entering the body, bacteria multiply and cause an infection which later develops into a disease.  On the other hand, the body’s immune system detects and recognizes these organisms as “foreign” invaders or antigens and responds by producing antibodies to counter the attack (Bennett, Dolin & Blaser, 2014). The human body can generate uncountable antibodies to fight multiple attacks on a daily basis without an individual necessarily noticing that they are being invaded and defended often. Nevertheless, most antibodies fade away after destroying the germs but the cells that produce them remain as memory cells. Memory cells protect the body when the bacteria or virus that had been previously destroyed tries to re-attack.
As for the vaccines, they contain antigens that are similar to those that cause infections. When they are injected into the body, they do not have the strength to cause signs and symptoms of a disease but they have the capacity to trigger the immune system to produce defense by generating antibodies (Bennett, Dolin & Blaser, 2014). This eventually, leads to the creation of, memory cells which prevent a person from becoming sick in the future if they are invaded by the same bacteria or virus.
 
 
References
Bennett, J. E., Dolin, R., & Blaser, M. J. (2014). Mandell, Douglas, and Bennett’s Principles and Practice of Infectious Diseases E-Book. Elsevier Health Sciences.