CNN chief medical correspondent Sanjay Gupta, MD, offers an accessible, data-packed answer to our biggest questions about Covid-19: What have we learned about this pandemic and how can we prepare for—or prevent—the next one?As America's favorite frontline Covid-19 health journalist, Dr. Sanjay Gupta has barely left his primetime seat in his makeshift studio basement since the pandemic began (other than to perform brain surgery). He's had the insider of insider access to the drama's unfolding, including exclusive conversations with the world's top public health experts and behind-the-scenes scientists racing to find treatments and cures. And now he's sharing what he's learned in a book that will answer not only all our questions about what happened, but also about how our world will change in the years ahead, even once we're back to "normal." Gupta argues that we need to prepare for a new era where pandemics will be more frequent, and possibly even...