I am assuming that sars-cov-2 has a human-specific furin cleavage site, and that the others are less-so.
The text below is from an article posted elsewhere on this page (which is obviously biased).
"All you really need to know about furin cleavage sites is that SARS-CoV-2 is the first and only SARS-like virus, out of many hundreds that have been described, ever to show up with a furin cleavage site in its spike gene. Sure enough, it’s an insertion, not a mutation, and it’s at the S1/S2 junction."
The text below is from an article posted elsewhere on this page (which is obviously biased).
"All you really need to know about furin cleavage sites is that SARS-CoV-2 is the first and only SARS-like virus, out of many hundreds that have been described, ever to show up with a furin cleavage site in its spike gene. Sure enough, it’s an insertion, not a mutation, and it’s at the S1/S2 junction."
https://www.spiked-online.com/2024/09/10/there-is-now-no-dou...