New ask Hacker News story: Ask HN: Why don't we make harmless viral vector vaccines highly contagious?

Ask HN: Why don't we make harmless viral vector vaccines highly contagious?
3 by yosito | 1 comments on Hacker News.
It seems like making a viral vector vaccine that is highly contagious, yet still harmless, would be a good way to distribute a vaccinate quickly and with little resistance among entire populations. It seems that we have the technology to do this. Are we working on it? Why haven't we done it yet?