That’s what I’ve been wondering. I’m sure there are *some* that have had the genomic sequencing to know, but all of them? Maybe they send all the positive swabs on for the additional testing?
So far, I haven’t had any success in finding that tidbit of info.
Geez Louise....never fails. As soon as I post ‘I can’t find X’, I find it!!!
Yes, I’m posting CDC. Since they issue the numbers, makes sense, right?
https://www.cdc.gov/coronavirus/2019-ncov/variants/cdc-role-surveillance.html
Since November 2020, CDC regularly receives SARS-CoV-2 samples from state health departments and other public health agencies for sequencing, further characterization, and evaluation. On January 25, 2021, the NS3 system was scaled-up to process 750 samples per week. Notable strengths of this system are the regular collection of numerous representative specimens from across the country and characterization of viruses beyond what sequencing alone can provide.
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So basically, they’re taking a poll of random samples each week and projecting from there. It’s an educated guess (oxymoron I know) based on the limited sampling they’re doing.