“The public fears genetic engineering. Nearly all politicians don’t understand it,” said Arthur Caplan, the founding director of the Division of Medical Ethics at NYU School of Medicine. “I don’t think the issue is economic. It is ignorance, distrust, fear of the unknown, fear of prior efforts to use biology to combat pests which went sour.”

“Chemical spray may be familiar, but it is a blunderbuss,” Caplan added.  “Old technology [is] hard to aim, often misfires, and is hard to maintain. Genetic engineering of nasty insect-pests is a rifle—very precise, low risk to the user.”

the new flu shot delivery system?

Essentially, yes.