[stormhill]

Very intriguing.
If your old textbooks are correct, then we can only conclude China has been playing this game for a while since Covid-19 is recognized to only be the second coming of SARS.

[wastoute]

Exactly what I’m saying. This family of virus never caused a human disease until “someone” started “tinkering” with it. At least that sure is the way it appears. I have a link to “Everything you ever wanted to know about Coronavirus”. It’s all I can do to read it.

https://www.sciencedirect.com/science/article/pii/S0065352706660053

Warning: it’s long and written for Virologists.