I went ahead and looked at the proteins expressed by Prevotella – they include immune suppression proteins.
Prevotella is responsible for aspiration pneumonia, with the same ground-glass opacity being used to detect Covid19. And also for IL-6 overexpression.
Even if secondary infection they should have reported, 1/4 of 26 million reads.
They do note in red the mysterious bat-nCov in SI table1. Yellow marking is by me.
Here is the SI pdf.