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转一篇从数理统计角度关于病毒起源的分析
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, r4 Z$ ~ \9 d' X9 yRockland County population 325,789 (2019)
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Rockland County COVID-19 cases 9,699 by April 22
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9699 / 325789 = 2.98% !
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How to Get Rid of Bats in the Attic6 r2 S! C6 B7 ~, ?0 O4 e
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补充内容 (2020-4-22 23:04):& `0 A) y7 i l5 v6 e
There have been 23,150 tests performed here (Rockland County), with a 41.9% rate of positives.
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