[ad_1] Is the effectiveness greater than 90%? What do scientists think of Pfizer’s new corona vaccine? _testSohu Pfizer’s new corona vaccine research has made major strides, but the challenges of mass production, storage and transportation lieBBC Chinese Network After the great news of the new corona vaccine was announced in …
Read More »Is the effectiveness greater than 90%? What do scientists think of Pfizer’s new corona vaccine? _Test-Sohu
