Outstanding again Dr! You may appreciate my all-hazards approach to source assumptions.
Hot off the press:
What was the Origin of SARS in 2003?
Or β was SARS-CoV-2 natural, accidental, or intentional?
https://all1healthsystems.medium.com/what-was-the-origin-of-sars-in-2003-9e22e5e3f9ac