For months, scientists and public health experts have been saying the most crucial part of defusing the COVID-19 pandemic will be developing a safe and effective vaccine. So it was cause for celebration this week when Pfizer announced that an early analysis showed its vaccine candidate was more than 90 percent effective.Now the drugmaker, the government and the public health community face a new challenge: quickly making millions of doses of the vaccine and getting them to the hospitals, clinics and pharmacies where they will be injected, two separate times, into people’s arms.If Pfizer receives authorization for its vaccine from the Food and Drug Administration in the coming weeks, as expected, the company in theory could vaccinate millions of Americans by the end of the year, taking advantage of months of planning and decades of experience.Close “I am very confident. I live and breathe this,” Tanya Alcorn, a Pfizer executive overseeing the supply chain for the vaccine, said in an interview Wednesday. “We have developed a system that does not waste any precious vaccine.” COVID-19 Vaccine Frequently Asked Questions View more How does a vaccine work? A vaccine works by mimicking a natural infection. A vaccine not only induces immune… Read full this story
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