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As cases surge, Israel says Pfizer vaccine less effective against Delta variant of Covid Hindustan Times 1:54 3 years ago 45 971 Скачать Далее
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AstraZeneca, Pfizer vaccines effective against Delta COVID-19 variants: study Reuters 0:51 3 years ago 60 050 Скачать Далее
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Covid Vaccines Are Less Effective Against Delta, Large Study Finds Bloomberg Quicktake 0:41 2 years ago 3 147 Скачать Далее
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Study: Johnson and Johnson COVID vaccine not as effective as Pfizer, Moderna vaccines against de... Click On Detroit | Local 4 | WDIV 4:02 2 years ago 43 606 Скачать Далее
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