不僅是疫苗出廠時的質量，還有運輸和儲存的問題。很多疫苗須低溫運輸，儲存。如果偷工減料，或不認真，會出問題。

來源: 欲千北於 2015-02-08 18:52:35 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

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