"...our results suggest progenitor of Omicron jumped from humans to mice, rapidly accumulated mutations conducive to infecting that host, then jumped back into humans, indicating an inter-species evolutionary trajectory for the Omicron outbreak." #SARSCoV2
This is exactly what a "Generalist Mammalian" virus looks like. Something is upon us never having been seen before. See pinned Tweet re: Generalist virus.

NIH site says this is peer reviewed now.
This scenario helps explain the many differences in the genome of the #OmicronVariant compared to previous variants, what was baking during Delta's conquest. This will continue and many more scenarios like it. Really, unstoppable, and expect wild new forms of this novel CoV.
Bat, human, dog, cat, pangolin, mink, primates, monkeys, white tail deer, and in the St. Louis zoo - tortoises.... "inter species novel coronavirus" - highly recombinant, genetic template switching.

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More from @humanspan

31 Dec 21
#OmicronVariant is ramping up is an understatement. Behold a #SARSCoV2 variant unleashed. "Spreading faster than anything we have ever seen before." The novel coronavirus will indeed find more who will be vulnerable to the disease aspect of this virus #COVID19.
Dynamic: many vaccinated believe many incorrect things: 1) You can still get infected. 2) You can still spread it it. 3) Although low %, you can be a breakthrough case. 4) Although low %, you can still succumb to the disease aspect of SARS-CoV-2 infection called COVID-19.
Dynamic: 1) Unvaccinated will be hit comparably to how we got hit year 1 as a fresh, unprotected host. 2) Unvaccinated who still underestimate: your lifestyle is conducive to helping the spread. 3) Asymptomatic spread is real - it is the "stealth" aspect of this coronavirus.
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