15 May '21 00:40>
Vector viruses are stripped of any genes that might harm you and actually cause disease. Genes that cause replication are also removed (skipping this step would create a self spreading vaccine), so the virus is harmless and cannot replicate.
Then the coronavirus spike protein genes are added, a use of recombinant DNA. The Oxford/AstraZeneca, J&J and Sputnik vaccines are genetically engineered viruses injected into your body.
Viral vectors are classified as gene therapy by the FDA. mRNA is also classified as gene therapy by the FDA. Since viral vector and mRNA vaccines are intended to prevent disease rather than cure an existing disease, viral vector and mRNA vaccines are called "gene vaccines".
Then the coronavirus spike protein genes are added, a use of recombinant DNA. The Oxford/AstraZeneca, J&J and Sputnik vaccines are genetically engineered viruses injected into your body.
Viral vectors are classified as gene therapy by the FDA. mRNA is also classified as gene therapy by the FDA. Since viral vector and mRNA vaccines are intended to prevent disease rather than cure an existing disease, viral vector and mRNA vaccines are called "gene vaccines".