Vaccine is produced using extremely small amount of weak or dead germs that can cause illnesses — for example, viruses, bacteria or toxins. It readies your body to fight the disease quicker and all the more effectively so you will not become ill.

Vaccines are products that ensure individuals against many diseases that can be very dangerous and even lethal. They are different in most of medicines that treat or cure diseases, vaccines keep you safe from becoming ill with the infection in advance.

Vaccines are products that produce resistance to a particular disease. At the point when you are exposed to an infection or disease, it protects you against that disease (you can be exposed to it without getting ill). Most vaccines are given by infusion (needle), yet some are given orally (by mouth) or nasally (spray into the nose).

Vaccination is the process of introducing a vaccine into the body to produce immunity against particular infection or disease.

Immunization is the interaction by which an individual or animal gets secured against an infection. This term is frequently used interchangeably with vaccination.


  • They protect us from hazardous infections or diseases. In certain regions or populations, hazardous diseases are continually present (endemic) such as hepatitis B, cholera and polio. So long as these diseases are around, we need immunizations to protect our self.
  • They protect children and the older. Our immune system is strong in adulthood, meaning that little children and the old are especially susceptible to hazardous diseases. By strengthening our immune systems early and late on throughout everyday life, immunizations bypass this risk.
  • If a sufficient population is immunized, diseases can’t spread from individual to individual, which means that everybody has a high level of protection even those who have weak immune system. This is known as herd protection (or herd immunity).
  • They can help limit drug resistance. Medication depends on having the option to treat infectious diseases with antimicrobial medications, for example, anti-infection agents, yet use and misuse of these medications is leading diseases getting resistant to them.
  • They are our most effective health intervention. Vaccines prevent an expected 2–3 million deaths worldwide every year. But, a further 1.5 million lives could be saved yearly with better global vaccine coverage.


Our immune system fights diseases by recognizing things that have a place in our bodies and things that don’t, destroying the rest of things. Undesirable unfamiliar substances are identified by markers on their surface called antigens.

An immunization works by exposing the immune system to the antigens from a microbe, something, for example, a virus or bacterium that causes a specific disease. At the point when your safe cells experience these antigens, they mount a response. One cell type – B cells – start making antibodies, which bind to the unfamiliar substance, disable it and mark it for destruction. Other immune cells, known as T cells, attack and destroy cells of the body that have been affected by the bacteria or any other hazardous organism.