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Placebo effect influences vaccine responses - Nature

New Pfizer results show its COVID-19 vaccine is nearly 95% effective - Science News

New Pfizer results show its COVID-19 vaccine is nearly 95% effective Science News
アストラゼネカ製ワクチン、重症化予防に「有効」と確信=CEO - Reuters

アストラゼネカ製ワクチン、重症化予防に「有効」と確信=CEO Reuters