mild & transmissible, indeed a nice exit scenario. Just too mysterious. The varriant is almost like

man made. Its evolution broken chain needs connection. None of 3 NPR's explanations satisfies me. Maybe #3 a little bit better.

Link: https://www.npr.org/sections/goatsandsoda/2021/12/01/1055803031/the-mystery-of-where-omicron-came-from-and-why-it-matters