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Pfizer vaccine 88% effective against delta variant: study<blockquote>辉瑞疫苗对德尔塔变异毒株病有效率88%:研究</blockquote>

Recipients of two doses of the Pfizer vaccine have strong protection against the delta variant that
Pfizer vaccine 88% effective against delta variant: study<blockquote>辉瑞疫苗对德尔塔变异毒株病有效率88%:研究</blockquote>

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