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PHealthy t1_j7hqjrj wrote

Reply to comment by Seicair in (Virology) Has SARS-CoV-2 outcompeted all the other coronaviruses which have been called the ‘common cold’? by jsgui

It's thought Delta evolved within an immunocompromised person(s) and Omicron was likely a spillover from humans to mice and back to humans.

https://www.nejm.org/doi/full/10.1056/NEJMsb2104756

https://www.sciencedirect.com/science/article/pii/S1673852721003738

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Seicair t1_j7i6fy4 wrote

Both of those links were fascinating, I hadn’t heard that omicron probably jumped species!

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