Are genetically engineered vaccines attenuated vaccines traditional vaccines with it

Live attenuated vaccine refers to a class of vaccines in which the structure of the A subunit (virulence subunit) is changed and the toxicity is weakened after the pathogen is treated with formaldehyde, but the activity of the B subunit (conjugation subunit) remains unchanged, i.e., antigenicity is maintained. Inactivated vaccine refers to a type of biological product used for prophylactic vaccination prepared by killing pathogenic organisms using physical or chemical methods. Genetically engineered vaccines use DNA recombination and other technologies to insert natural or synthetic genetic material directionally into bacteria, yeast or mammalian cells, so that the full expression of the vaccine produced after purification.