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I'm not really clear on the difference between the two stats, but HS theory does predict a March-April bump I believe. Could be a geographical issue? Not sure.
1) Sentinel clinic data: The flu surveillance people swab a few hundred people with respiratory illness every week and test them for major respiratory viruses. 2) Then there's the mass Corona PCR tests. Right now Corona is almost gone from dataset 1) but surging in dataset 2)
Are there substantial differences in methodology? In the US, the qPCR Ct cutoff is usually very high.
They're all PCR tests, no idea about cycle thresholds in the sentinel clinic vs. mass PCR Corona test data, but theoretically this is all done in the same labs. Some kind of sampling anomaly, maybe.
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