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The present natural #OriginOfCovid hypothesis
1⃣SARSrCoV adapted to spread in human+other animals
2⃣Recently evolved furin cleavage site
3⃣Went to Wuhan where scientists planned to put furin cleavage sites in SARSrCoV
4⃣Spilled over 2x
5⃣Disappeared, no trace at origin or journey
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由
Alina Chan
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