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Contrary to what Andersen says, DEFUSE does *not* say that changes will be made only to S2' and not to S1/S2. DEFUSE does not even use the terms S2' or S1/S2. Rather, DEFUSE lumps both of these into one term: "proteolytic cleavage sites in S2". 2/
https://twitter.com/TheAtlantic/status/1636486931184844802First of all, it would be nice to see an actual preprint. It’s hard for anyone to assess whether what these folks are saying makes sense unless it’s written down.
"As 2019 turned into 2020, a coronavirus spilled over from wild animals into people,...." This ignores the fact that many scientists still believe zoonosis has not been proven. It also implies, strangely, that zoonosis was proven even *before* these papers were published.