Myrddin is perfectly capable of defending himself, but your ill-tempered post addresses a wider issue that is worth exploring.
Myrddin references a study from the UK that was published back in August, iirc, that examined differences between the original wild variant and the India variant, now called Delta. The investigators were limited and clear in their objectives and findings, but that study, and one other were subsequently picked up by a wide range of conspiracy sites that grossly misrepresented the findings, and extrapolated beyond the studies to allege a range of things not found in the originals.
THAT is the common thread in much of this: someone deliberately misrepresents a real paper’s findings, and counts on people not going to the source and having the critical eye to spot the misrepresentations.
Knowing where this is coming from is the first step in understanding.
I think you answered the wrong person...your post seems confused.
If a test cannot differentiate between the flu, the cold and a virus that hasn’t been isolated, how could there possibly be any variants?