Vaccines train the body's immune system to recognise and fight against dangerous microbes. They come in the form of injections (shots), liquids, pills, or nasal sprays.
Types of Vaccines:
A reduced version of the germ is used in live-attenuated vaccines.
The germ is destroyed and used in inactivated vaccines.
The only components of the germ that are used in subunit, recombinant, polysaccharide, and conjugate vaccines are its protein, sugar, or packaging.
vaccines known as toxoids that use a toxin, a toxic byproduct of the germ.
mRNA vaccines use messenger RNA, which instructs your cells to produce a protein (or component of a protein) from the embryo.
The genetic material used in viral vector vaccines provides your cells with the directions they need to produce the germ's protein.