Anonymous ID: b3b43a Dec. 5, 2020, 6:47 a.m. No.11913049   🗄️.is 🔗kun

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Zoonotic infection with subsequent spread from animals back to humans of a mutated virus.

 

https://www.thelancet.com/journals/laninf/article/PIIS1473-3099(20)30912-9/fulltext