What is Vaccine? a vaccine that vitalizes a person’s immune system to produce immunity? Providing immunity from disease-causing germs or microbes and protecting the person. Vaccines are usually given through needle injections.

Let’s read about what is Vaccine?

Why we Need Vaccine

The vaccine is a type of medicine that keeps the immune system strong so that it can fight future or present diseases.

The measles, mumps, and polio vaccine, and rabies vaccine are examples. What are vaccines made up of?  It is made up of Bacteria or viruses, active compounds are known as antigens.

What is Vaccine
What is Vaccine?

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What is Vaccine?

A vaccine is a biological substance designed to protect humans from infections caused by bacteria and viruses.

Vaccines are also called immunizations because​ they protect our body from diseases causing germs and protect our body from harmful infections and microbes.

Immunization is as important as being on a diet and daily exercise. A child is infected with a disease like polio or rabies, our body produces antibodies.

To fight but our body’s process is slow as compare to microbes causing disease so in this case vaccine is given to kill disease-causing Antigens.

Importance of Vaccine

  • It reduces the children’s death rate- Vaccines protect against infectious diseases such as rabies, mumps, polio, and whooping cough.  Vaccines act as a shield, protecting, saving up to 3 million lives each year.
  • Affordable to the public- Healthier children are more mentally socially, active who are properly vaccinated. Vaccines are affordable to people as there are free health care resources. The government is also offering to free up health care resources.
  • Rigorous testing before work- Before given to any patient or children rigorous test is done which creates no way of thinking twice before getting an immunization.
  • Could be easily available to a large number of people- A vaccine is available to a large number of people. There are different programs immunization programs.
  • They live a healthier life- Getting yourself immunized leads to a healthier life as compared to getting infected to the infectious disease gets reduced.

Types of Vaccine

Vaccine type SubTypes
Live, attenuated Measles, mumps, rubella (MMR combined vaccine)
Varicella (chickenpox)
Influenza (nasal spray)
Inactivated Polio (IPV)
Hepatitis A
Toxoid Diphtheria, tetanus (part of DTaP combined immunization)
Subunit/conjugate Hepatitis B
Influenza (injection)
Haemophilus influenza type b (Hib)
Pertussis (part of DTaP combined immunization)


Vaccine type Other available vaccines
Live, attenuated Zoster (shingles)

Yellow fever

Inactivated Rabies
Subunit Human papillomavirus (HPV)

Benefits of Vaccine
Benefits of Vaccine

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Benefits of Vaccine

preventing countless cases-  Vaccination has saved millions of people around the globe. through successful vaccination, many diseases are almost gone some of the diseases are below –

  1. Polio
  2. The flu influenza
  3. Hepatitis B
  4. Tetanus
  5. Hepatitis A
  6. Rubella
  7. Measles
  8. Hibs
  9. Whooping cough
  10. Rotavirus
  11. Mumps
  12. Chickenpox
  13. Diptheria

Protect from contagious and dangerous disease –  Vaccine protects community, families, and community. Vaccination saves the lives of the people which intends to saves money and time around the globe.

Vaccine Production

millions of people receiving them safely every year.  what is the vaccine? it goes through boundless and rigorous testing to ensure it is safe before it can be introduced in a country.

Each vaccine goes through screenings and analysis to determine which antigen should be used turn to an immune response.

This preclinical phase is done without testing on humans. An experimental vaccine is first tested in animals to evaluate its safety and potential to prevent disease.

If it shows a good response to animals then the vaccine is tested in humans.

Phase 1

The vaccine is given to young, healthy adult volunteers to check its safety, confirming immune response, determining the right dosage.

Phase 2

The vaccine is then given to more people to check an immune response. There are usually multiple trials are done on different age groups. changes are noticed in the people who got vaccinated as compared to the people who did not get vaccinated.

Phase 3

The vaccine is next given to thousands of volunteers and compared to a similar group of people and comparison is done on the basis of the result.

Vaccine Production
Vaccine Production

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Most Vaccine Producer Country

vaccine producing countries are as follows

Most Vaccine Producer Country


India is a giant in vaccine production. Companies in India are manufacture different types of vaccines and exporting to the world. Serum Institute of India is a big example which is manufacturing a Covishield Vaccine to the fighting of the corona.

Vaccine Manufacturer in India

  • Bharat Biotech International Ltd
  • Serum Institute of India
  • Biological E
  • Cadila Healthcare
  • Shantha Biotechnics Ltd


America is not only manufacturing vaccines but their companies also do research on its formula.

Vaccine Manufacture in America.

  • Merck and company
  • Sanofi pharmaceuticals
  • johnson and johnson
  • Pfizer
  • Emergent Biosolutions
  • Gilead Sciences

Vaccine Manufacturer in Russia

Russia’s Sputnik V is one of the good vaccines against fighting with Covid-19. They also developing the second generation of Sputnik V which requires only a single dose. as you know Russia is one of the first countries which develop a vaccine in August 2020

Russian President Vladimir Putin announced in August 2020 the world’s first registered vaccine against the novel coronavirus, Sputnik V, which is named after the space satellite launched by Moscow in 1957.

Gamaleya Research Institute of Epidemiology and Microbiology Russia’s Research Institute develop Sputnik V

Vaccine Manufacturer in China

China’s vaccine manufacturing capacity is growing per year they are manufacturing various types of vaccines. Their Vaccine against Covid-19 is a Sinopharm vaccine Which developed Sinopharm China National Biotec Group.

  • Sinopharm China National Biotec
  • National Vaccine & Serum Institute (NVSI)
  • Shanghai Institute of Biological Products (SIBP)
  • Changchun Institute of Biological Products(CIBP)

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