One such technology is: DNA vaccines. They would alter recipients' genetic makeup permanently.

But Reuters has seen fit to claim: "A future COVID-19 [DNA] vaccine will not genetically modify humans." This comes from their "fact-check team" — May 18, 2020: "False claim: A COVID-19 vaccine will genetically modify humans."

To reach this conclusion, Reuters cites two people: "Mark Lynas, a visiting fellow at Cornell University's Alliance for Science group", and "Dr. Paul McCray, Professor of Pediatrics, Microbiology, and Internal Medicine at the University of Iowa."

I have cited the New York Times, March 10, 2015, "Protection Without a Vaccine." Here are quotes from the Times article:

"By delivering synthetic genes into the muscles of the [experimental] monkeys, the scientists are essentially re-engineering the animals to resist disease."

"'The sky's the limit,' said Michael Farzan, an immunologist at Scripps and lead author of the new study."

"The first human trial based on this strategy — called immunoprophylaxis by gene transfer, or I.G.T. — is underway, and several new ones are planned." [That was five years ago.]