Recombinant DNA vaccines are produced by using genetically engineered plasmids that have gen e inserts possessing the surface proteins of a pathogen. After the binding of pathogens to these surface proteins. A weak immune response is ellicited but it do not results in infection.
These plasmids are inserted in bacteria or yeast cells that expreses the viral proteins, which are then injected into the human host as vaccine, wehre they are recognised as foreign and an immune response is elicited.
Recombinant hepatities -B vaccine and polio vaccine are the examples.
