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Prognosis is back for a second season. Over the next few weeks, we're acknowledging how science and technology are making it easier for us to know pretty much everything there is to know about ourselves: Where we come from. The best time to conceive. What might kill us. And what ...  Show more

On the latest edition of Prognosis, we'll tell you how a simple DNA genealogy test upended the life of a Washington state sheep farmer. Instead of finding out more about the Swedish and Jewish roots she'd heard about, she found that she had an entire family she didn't know about, ...  Show more

Several vaccine companies have announced promising early evidence that their vaccines are effective at preventing symptoms of a coronavirus infection. So what comes next? CNN Chief Medical Correspondent Dr. Sanjay Gupta talks to vaccine creator and virology and immunology expert, ...  Show more

Long Covid can ruin lives, and scientists are striving to understand the condition and beginning to get some early clues about possible treatments. While there are still more questions than answers, though, many have turned online for help. But could what they find there sometime ...  Show more

Earlier this spring, doctors around the country began to worry that fear of Covid-19 was keeping their patients away. Now, we’re starting to see the consequences of that. Today, CNN’s Chief Medical Correspondent Dr. Sanjay Gupta talks to Dr. Michelle Kittleson, a cardiologist in ...  Show more

Everybody hopes that the new super-charged Omicron variant of coronavirus will be less severe, but even if it is, it’s spreading so fast and infecting so many people, health services around the world could still buckle under the strain.Two years into the pandemic, Claudia Hammond ...  Show more