美國這樣的疫情,都是18-22個月過去的,起於一個流感季中後期,結束於第三個流感季的前中期,跨三個流感季,1918還是2009,都是這樣的。So we've got to look to Oct/Nov 2021 to conclude this virus, the earliest.
美國這樣的疫情,都是18-22個月過去的,起於一個流感季中後期,結束於第三個流感季的前中期,跨三個流感季,1918還是2009,都是這樣的。So we've got to look to Oct/Nov 2021 to conclude this virus, the earliest.
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