The Vital Role of Vaccines: Why are Vaccines Important

Why are vaccines important? (Image via Pexels/ Cottonbro Studio)
Why are vaccines important? (Image via Pexels/ Cottonbro Studio)

We all know getting vaccinated is crucial, but have you ever wondered why are vaccines important? We come into contact with numerous viruses, bacteria, and other microorganisms every day of our lives. While some of these bacteria are helpful to humans, others are at the root of many illnesses that can leave people seriously ill, disabled, or even dead.

By inducing responses that neutralize harmful bacteria and stop the illness, our immune system defends us against a variety of infections. However, it is unable to combat certain illnesses, such as the brand-new Coronavirus. To assist and boost the immune system, and produce antibodies that shield the body from infections, vaccines play a critical role in this process.


How Do Vaccines Work?

It is important to get vaccinated at a young age. (Image via Pexels/ CDC)
It is important to get vaccinated at a young age. (Image via Pexels/ CDC)

Learning about the way vaccines function can help one understand why are vaccines important. Vaccines work by preparing the immune system to combat an infection in the future by educating the body to recognize specific hazardous germs.

Antigens are tiny fragments of diseased or dead microorganisms that are introduced in our bodies through vaccines. These antigens operate to stimulate the immune system without really making people sick.

T and B lymphocytes, also known as T and B cells, are specialized immune system cells that are activated in response to vaccination antigens so that, in the event that we subsequently contract the infection, our body's immunological defense system will be able to identify the pathogens and defend us. Therefore, vaccinations are safer than acquiring immunity through a microbial infection.


Reasons Why Are Vaccines Important

Here are some reasons that justify why are vaccines important:

1) Why are vaccines important: Eradicating diseases

Since the introduction of smallpox and polio vaccines, these illnesses have all but disappeared from the globe. Measles and diphtheria vaccines have proved effective in lowering incidence by 99.9%. Upto 3 million fatalities are avoided annually due to vaccines.

Vaccination promotes herd immunity. (Image via Pexels/ Frank Merino)
Vaccination promotes herd immunity. (Image via Pexels/ Frank Merino)

2) Why are vaccines important: Higher life expectancy

As the saying goes, prevention is always preferable to cure. Serious illnesses like polio, tetanus, rubella, and others are preventable, sparing individuals from grueling medical procedures and exorbitant costs.

Early vaccinations are advised to guard against catching such infections. The life expectancy of people is also extended by protection against illness via vaccination.


3) Why are vaccines important: Herd immunity

When a sizable portion of a group (herd) is immune, herd immunity or herd protection occurs. Vaccination prevents and delays the transmission of an infectious agent by reducing pathogen shedding.

As a result, not just those who have received immunizations are protected but the entire community is safeguarded. Certain illnesses can be eradicated even in the absence of 100% immunization coverage due to herd protection.


4) Why are vaccines important: Vaccines secure health and development

The majority of childhood immunizations, according to the American Academy of Paediatrics, are 90 to 99% efficient at preventing disease. Childhood vaccines are crucial since infants and young children are among the populations most likely to contract deadly diseases.

Almost everyone must be vaccinated. (Image via Unsplash/ Diana Polekhina)
Almost everyone must be vaccinated. (Image via Unsplash/ Diana Polekhina)

To protect against a variety of illnesses, the Centers for Disease Control and Prevention (CDC) advises vaccination throughout life. By skipping vaccinations, you put yourself at risk for diseases including shingles, pneumococcal disease, the flu, and cancer-causing viruses like HPV and hepatitis B.

People who aren't immunized risk infecting other children who are too young to receive vaccinations or vulnerable individuals with compromised immune systems, such as cancer patients and transplant recipients. These weak individuals may suffer long-term difficulties or even risk losing their lives as a result of this.


These reasons are enough to help us understand why are vaccines important. Almost everyone needs to be vaccinated, although there are certain exceptions, mainly those who suffer from a major illness (such as a weakened immune system). However, never forego immunization without first consulting your doctor.

Edited by Susrita Das
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