1. Corona season is almost over. Blue bars: Severe respiratory infections at German sentinel clinics over past year (from week 12 2020 to week 11 2021). Grey line: % of SARI cases that are Coronapic.twitter.com/MfNRA5MFqL
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I'm not sure that's even possible. You can have a superinfection with multiple viruses including multiple strains of the same virus.
Indeed, the mechanism isn't clear, but influenza transmission is complex and poorly understood. Something has disturbed its ecology somehow. It's the only explanation for why flu is absent even in places without any Corona restrictions
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almost everywhere, the March 2020 Corona spike corresponded with a precipitous, unusual drop in influenza cases, despite in many places increased flu testing (physicians trying to confirm Corona infections by elimination, when Corona PCR tests were still hard to come by)
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