They are finding that prior exposure to other coronavirus infections (common cold, animal viruses) leaves behind t-cells that are activates for covid-19, as lon

They are finding that prior exposure to other coronavirus infections (common cold, animal viruses) leaves behind t-cells that are activates for covid-19, as long as 17 years. And that a large percentage of the population has these t-cells. [0] Perhaps that explains why we have appeared to reached herd immunity in places like northern Italy, NYC, etc. The tests for b-cell antibodies don't detect t-cells. Worst case predictions are just not panning out for this virus. It is like other coronavirus infections. It was expected to decrease in severity and become endemic, perhaps another common cold variant of something that comes up like a bad flu year every once in a while [1] [0] https://www.nature.com/articles/s41586-020-2598-9 https://www.nature.com/articles/s41586-020-2598-9 [1] https://www.statnews.com/2020/02/04/two-scenarios-if-new-coronavirus-isnt-contained/ https://www.statnews.com/2020/02/04/two-scenarios-if-new-cor...