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病毒不斷變種而疫苗不變 沒效了
打就對了🥲
至少能防重症
不知道要確診了才曉得
預防重症還是有效的 可以保命
現在基本疫苗都是有用的
效力大減，打咗等於冇打
疫苗是針對之前的病毒做研發的 所以可能保護力會降低
效果不太大
