COVID-19: As Cases Spike In California Three Vaccines On The Horizon
The number of new cases in California has tripled in the past month, but as Andrea Nakano reports, there is good news on the horizon.
Pfizer Says It Has A COVID-19 Vaccine That Is 90% EffectivePfizer's coronavirus vaccine candidate is more than 90% effective in preventing COVID-19. Other vaccines like chickenpox, measles, and polio all hover in the 90% and higher effective range. Pfizer..
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