Vaccine Types
There are several different types of vaccines. Each type is designed to teach your immune system how to fight off certain kinds of germs—and the serious diseases they cause.
When scientists create vaccines, they consider:
How your immune system responds to the germ
Who needs to be vaccinated against the germ
The best technology or approach to create the vaccine
Based on a number of these factors, scientists decide which type of vaccine they will make. There are several types of vaccines, including:
Inactivated vaccines
Live-attenuated vaccines
Messenger RNA (mRNA) vaccines
Subunit, recombinant, polysaccharide, and conjugate vaccines
Toxoid vaccines
Viral vector vaccines
https://www.hhs.gov/immunization/basics/types/index.html