Good News on Coronavirus?

In his profoundly understated English way, Dr. Joseph Campbell seems to be excited by this new research.

It suggests that immunity to COVID-19 lasts at least seventeen years.

It moreover suggests that some portion of the population is already immune.

This seems to be from prior exposure to some other virus that caused no or trivial symptoms.

Put this together, and it suggests that 1) an effective vaccine stands a good chance of rendering this vuris extinct. 2) we may be closer to "herd immunity" than we realize.  possibly the maggic number is now as low as 20% for new infections. 3) there may be a natrural and safe vaccine already out there, just like cowpox was for smallpox, if we can just figure out what the prior infection was that caused this common immunity.

From a BBC story:

"Most bizarrely of all, when researchers tested blood samples taken years before the pandemic started, they found T cells which were specifically tailored to detect proteins on the surface of Covid-19. This suggests that some people already had a pre-existing degree of resistance against the virus before it ever infected a human. And it appears to be surprisingly prevalent: 40-60% of unexposed individuals had these cells."