The vaccine was significantly more effective … if they had not been vaccinated in the previous five years.
這句話還不能說明問題嗎? 應該好好想想是不是要年年都打疫苗,或者應該每5年打一次?
The vaccine was significantly more effective … if they had not been vaccinated in the previous five years.
這句話還不能說明問題嗎? 應該好好想想是不是要年年都打疫苗,或者應該每5年打一次?
• 這句話說明接種是有效的。至於如何提高效果,是另外的問題。 -吃與活- ♂ (0 bytes) () 12/01/2015 postreply 14:30:25
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