The Good Kind of Surge

Nine vaccines have proved effective at protecting people from developing symptoms of Covid-19. But we don’t know yet how good they are at preventing asymptomatic infections, and keeping vaccinated people from passing the virus on to others. The good news is that preliminary signs ...  Show more

Almost a month after U.S. vaccination campaigns ramped up to give Covid-19 shots to more than a million people a day, their second doses are coming due. That’s putting a strain on state rollouts, and leaving some people without complete immunizations. John Tozzi reports that as P ...  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