Should be noted that this is completely unsurprising. Based on serology, we KNEW that existing immunity would probably not significantly blunt a second wave in Sweden
https://twitter.com/Birdyword/status/1326773773060759552 …
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Belgium was only at 4% despite the 0.1% PFR?

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That's what the only national serology study suggested, although worth noting it was based on residual sera so there's a reasonable margin of error there
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Very interesting! I expected higher rates for Sweden. Recently, there was a study reporting seroprevalence rates of~20% for New York City. Some claim that this might be sufficient to substantially slow down the spread of COVID-19. What do you think of this hypothesis?
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a timeline for Sweden


https://twitter.com/WKugelberg/status/1326582826691686403 …This Tweet is unavailable.Thanks. Twitter will use this to make your timeline better. UndoUndo
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