The Johnson & Johnson "vaccine" should be called a "gene therapy". It is designed to cause changes in the nucleus of human cells. It is also, as I understand it made using a similar method to the "gene therapy" that apparently killed Jesse Gellsinger.

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC81135/

Quote from article:

"On Sept. 13, 1999, Gelsinger was given an infusion of corrective OTC gene encased in a dose of attenuated cold virus, a recombinant adenoviral vector; it was injected into his hepatic artery. Gelsinger experienced a severe immune reaction to the vector — the gene's delivery vehicle — and died 4 days after receiving the injection."