Since Dr. Patterson is well versed and knows what potential problems may occur, I suspect he will be testing blood samples of those who've been 'infected' with Covid-19... and like he has learned all sorts of new things from what's transpired so far (CCR5, CCL5) he may very well learn much more in the weeks, months and even years ahead from this pandemic... let's just hope not many more lives are taken prematurely...
Remember what Dr. Pourhassan and others have said... they're all waiting for trial data, and I can imagine even those providing peer review may be waiting for that as well.