辉瑞药厂发表最新研究:接种加强针的最理想时间是....
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辉瑞药厂积极向各国政府申请,紧急批准使用疫苗加强剂。药厂最新发表的研究指出,完成接种后近1年打加强剂为最理想时间,有效率将超过95%,更能防范现时肆虐全球的Delta变种病毒。
辉瑞周四(21日)发表未经同行评审的研究为1万名16岁以上﹑接受早期疫苗试验的民众,在完成接种后11个月打加强剂。结果显示,疫苗有效率高达95.6%,同时安全度更高,而且能够对抗Delta变种(首先在印度发现)。
研究分别为有关人士接种加强剂或安慰剂,加强剂组别中,只有5宗确诊,反之安慰剂组别多达109人确诊。实验参与者年龄届乎16至55岁达55.5%,65岁或以上占23.3%,年龄中位数为53岁。
美国投行Jefferies分析师Michael
Yee认为,实验数据证明加强剂有助防范有症状感染,以及提供长期保护。匹兹堡大学医学院教授盖拉特(Walid
Gellad)指出,加强剂似乎亦有助防范无症状感染,但未知是否所有年龄层受惠。
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