They mean there is one cheap easy test that can detect Covid, but not tell you what kind of covid it is and then another more expensive harder test that can also tell you what kind it is.
They only do the harder test with random sampling to see what % is what type in an area. They do the easy test to see how much covid there is of all types.
I still do not trust their numbers for other reasons, but what the are saying about the tests sounds legit to me.
Statistical models. It’s all “theoretical”.
https://www.cdc.gov/mmwr/volumes/70/wr/mm7023a3.htm
Much like the global warming models... cherry pick info and extrapolate it out to meet your agenda / narrative.
They mean there is one cheap easy test that can detect Covid, but not tell you what kind of covid it is and then another more expensive harder test that can also tell you what kind it is.
They only do the harder test with random sampling to see what % is what type in an area. They do the easy test to see how much covid there is of all types.
I still do not trust their numbers for other reasons, but what the are saying about the tests sounds legit to me.