difference between 1st,2nd,3rd, and 4th generation vaccines.
i generation vaccines: live attenuated pathogens
ii generation: chemically or physically inactivated pathogens
iii generation: contained purified and synthetic proteins.
iv generation: these vaccines are DNA and vector based vaccines
ii generation: chemically or physically inactivated pathogens
iii generation: contained purified and synthetic proteins.
iv generation: these vaccines are DNA and vector based vaccines