研究發現，與Omicron亞型BA.1和BA.2相比，康復者與已打疫苗加強劑人士對BA.4及BA.5的中和抗體效力低3倍，料BA.4和BA.5會導致有高疫苗覆蓋率及高群體免疫的人口發生大規模感染，但接種疫苗仍能有效避免BA.4和BA.5患者出現重症。
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Cindy Choi
強烈禁英，美，歐回港
Chan Wingleung
即係越打得多針越容易感染？
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Chris Leung
即係話打針冇用，但打左好d
Tom Tsang
咁咪再打多兩支囉
Lilian Ngan
咪能報啦，唔想知啊
Songtsoi Ming
點只呢兩隻呀！地球好多病菌的，住唔到人嫁，快d坐火箭走人啦。。
Chan Hopeful
幾時出到 ba 1000
Sandy Jia Rao
打左針，以為自己無敵，先會容易中呀
Peng Po Lee
又係推銷員出口術
Hahar Lam
会重复感染讲咗好耐啦
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