Leaked grant proposal details high-risk coronavirus research
1.  There is no viral backbone anyone knows of which would have been used in this research<p>2.  There is no spike protein anyone knows of which would have been used in this research<p>3.  The PRRAR furin cleavage site is not one humans would have tried it is unlike any other known furin cleavage sites in coronaviruses<p>4.  There are now many known related sarbecoviruses which have been found with furin cleavage sites<p>5.  Furin cleavage sites have independently evolved in multiple different branches of coronaviruses, probably a dozen times that we know of now.<p>6.  The furin cleavage site is short and can easily happen through recombination with another virus due to coinfection.<p>7.  This is very likely what happened due to infection with the SARS-CoV-2 ancestor and an HKU9-like virus.<p>It is not particularly suspicious that the thing which we were worried about happening and causing a zoonotic spillover event is the thing which actually happened.