ANATOMY

Detailed explanation-1: -A vaccine is a preparation that contains weakened or killed pathogens. It cannot cause a full-fledged infection but it can activate the immune system. The immune system prepares weapons against this pathogen and keeps them handy if at all the same pathogen attacks the body again. This is the basis of immunisation.

Detailed explanation-2: -Inactivated vaccines use the killed version of the germ that causes a disease. Inactivated vaccines usually don’t provide immunity (protection) that’s as strong as live vaccines. So you may need several doses over time (booster shots) in order to get ongoing immunity against diseases.

Detailed explanation-3: -Live-attenuated vaccines contain live pathogens from either a bacteria or a virus that have been “attenuated, ” or weakened.

Detailed explanation-4: -In the process of making these vaccines, the toxins are weakened so they cannot cause illness. Weakened toxins are called toxoids. When the immune system receives a vaccine containing a toxoid, it learns how to fight off the natural toxin.

Detailed explanation-5: -Vaccine: A preparation that is used to stimulate the body’s immune response against diseases. Vaccines are usually administered through needle injections, but some can be administered by mouth or sprayed into the nose.