https://www.cdc.gov/coronavirus/2019-ncov/cases-updates/testing-in-us.html
美國開始大規模測試是從3.16開始,之前每天也就測幾千例,從這一天開始每天測試案例開始上萬。
測試的多,當然發現的也多。
https://www.cdc.gov/coronavirus/2019-ncov/cases-updates/testing-in-us.html
美國開始大規模測試是從3.16開始,之前每天也就測幾千例,從這一天開始每天測試案例開始上萬。
測試的多,當然發現的也多。
•
因果關係,3.16前得病毒的人少測試當然少,3.16後得病毒的人大量增加測試當然多
-fourwaves-
♂
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04/21/2020 postreply
12:51:52
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