Damn good question. Some of us have wondered about this for some time now.
Everything since Dec 2019 has been a WAG:
Wild Ass Guess
My favorite part of this article and many others is the part where they effin “deem” something exists...
“...there is no specific test for the Delta variant, it’s likely a positive Covid-19 result indicates you could be infected with the variant, according to Human and Health Services of Texas.
The reason is because the majority of Covid cases in the United States are the Delta variant.”
Genetic sequence tests and then statistical extrapolation. Example, take 100 samples, sequence them, see that 70 of them are Delta, and conclude 70% of infections are Delta.
I’m thinking they determine the variant with a method similar to that used in the South Park Margaritaville episode. They take a chicken...
It has always been a guess and sold as “science”. Plenty of Freeper scientists on here.
Medical – Sterile.
* For anal specimen collection.
* 6" length for deep penetration.
* 2 per sealed pouch.
In order to specifically check for the Delta variant, a genomic sequencing Covid-19 test is required, which certain labs and local health departments have access to.
They check to see if you have the sniffles and are not dead
to determine a ‘variant’ one must get a dna test of the virus itself. very expensive, very unneccessary.