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dec 31, 1989 - ELID Ⅱ期疫苗有效率85%

Description:

1989年12月31日，国际卫生组织宣布，ELID Ⅱ型疫苗有85%的有效率。

Added to timeline:

少女前线世界观补全计划

1 months ago

4

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21187

Date:

dec 31, 1989

Now

~ 35 years ago

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