Yuri Deigin video interview concerning Sars-Cov-2

First of all, a disclaimer:   for the following video, or for my posts here (being A1 or not being A1)  in pursuit of relevant info on Sars-Cov-2.
       So:  try if you have 10 minutes this video from 45 minutes to 55 minutes, but go further if you have the inclination.  https://www.youtube.com/watch?v=q5SRrsr-Iug&feature=youtu.be

Thanks to Yuri Deign of Moscow (who got a degree from eastern Canada and then another from eastern US) and the interviewer, B. Weinstein.