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: -How do vaccines work? Vaccines help your immune system fight infections faster and more effectively. When you get a vaccine, it sparks your immune response, helping your body fight off and remember the germ so it can attack it if the germ ever invades again.

Detailed explanation-3: -An antigen specifically induces the production of antibodies which can bind to it and neutralise it. While most vaccines work by inducing B lymphocytes to produce antibodies (see below), activation of T-cells-another type of immune system cell that helps protect against disease-is also important for some vaccines.

Detailed explanation-4: -When you get a vaccine, your immune system responds to the vaccine the same way it would to the real germ. It: Recognizes the germ in the vaccine as being foreign. Responds by making antibodies to the germ in the vaccine, just as it would for the real germ.

Detailed explanation-5: -Vaccines contain dead or weakened microbes of a particular disease. When a vaccine is introduced into a healthy body, the body fights and kills them by producing suitable antibodies. These antibodies remain in the body and protects it from the microbe when it invades the body again.

Detailed explanation-6: -Finally, when people receive a vaccine, some may experience some mild symptoms for a day or two, such as a fever, chills, or fatigue. This does not mean that you’re infected with a virus or other pathogen. Rather, your body acts as if it’s fighting a mild form of the germ and produces a related immune response.

Detailed explanation-7: -Vaccination is the injection of a dead or weakened organism that forms immunity against that organism in the body. Immunization is the process by which an animal or a person stays protected from diseases.