Jason R. McKnight

Workers prepare to ship the Pfizer COVID-19 vaccine from the company’s manufacturing plant in Kalamazoo, Michigan. Morry Gash/Pool/AFP via Getty Images

The coronavirus vaccine: A doctor answers 5 questions

As the coronavirus rages, a vaccine finally is available for certain groups of people and will soon be ready for other groups. But there are plenty of questions. A doctor answers five here.

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