IMMUNOLOGY

Detailed explanation-1: -Vaccines contain weakened or inactive parts of a particular organism (antigen) that triggers an immune response within the body. Newer vaccines contain the blueprint for producing antigens rather than the antigen itself.

Detailed explanation-2: -Live-attenuated vaccines Live vaccines use a weakened (or attenuated) form of the germ that causes a disease. Because these vaccines are so similar to the natural infection that they help prevent, they create a strong and long-lasting immune response.

Detailed explanation-3: -Live-attenuated vaccines contain live pathogens from either a bacteria or a virus that have been “attenuated, ‘’ or weakened. According to Dr. Scully, live-attenuated vaccines are produced by selecting strains of a bacteria or virus that still produce a robust enough immune response but that does not cause disease.

Detailed explanation-4: -Dead vaccines, also known as inactivated vaccines, are vaccines containing dead or inactive forms of a pathogen. These vaccines are made up of pathogens which are completely killed in a lab before administration to the community. These vaccines are killed using heat, chemicals or radiation.

Detailed explanation-5: -Whole virus vaccines use a weakened (attenuated) or deactivated form of the pathogen that causes a disease to trigger protective immunity to it. There are two types of whole virus vaccines. Live attenuated vaccines use a weakened form of the virus, which can still grow and replicate, but does not cause illness.