The CDC said it has not "quantified virus isolates", meaning they have isolates, but not quantified ones. In the same paper they said they used virus RNA instead because they could quantify them, so they never claimed not to have the virus.
They have a database with the complete RNA sequences of 200,000 virus variants, you can find a map of them at https://nextstrain.org/ncov/global
The CDC said it has not "quantified virus isolates", meaning they have isolates, but not quantified ones. In the same paper they said they used virus RNA instead because they could quantify them, so they never claimed not to have the virus.
They have a database with the complete RNA sequences of 200,000 virus variants, you can find a map of them at https://nextstrain.org/ncov/global
(post is archived)