4/
The FDA seemed uncertain on Apr 25, a full 13 days AFTER "(raw)" was added to the CDC 's guidance:
"Additional testing is required to determine whether intact pathogen is still present and if it remains infectious"
Ya think??
Now, whether or not it has since been proven, the fact remains, they didn't yet know for sure and then played it down in the guidelines.
I find them all less than trustworthy. YMMV