Actually, to the point of viral strain differences, I did come across this paper indicating exactly that idea— that there are two strains. I am not a scientist,

Actually, to the point of viral strain differences, I did come across this paper indicating exactly that idea— that there are two strains. I am not a scientist, so I cannot evaluate the veracity of the claims, but did find the work interesting and compelling: https://academic.oup.com/nsr/advance-article/doi/10.1093/nsr/nwaa036/5775463 https://academic.oup.com/nsr/advance-article/doi/10.1093/nsr...