Recent data from the C.D.C. has found that not only can vaccinated people get infected with the Delta variant of the coronavirus, though instances are rare, but they also can potentially spread the virus just as much as an unvaccinated person.What are the practical implications of this new information?Guest: Apoorva Mandavilli, a science and global health reporter for The New York Times.Sign up here to get The Daily in your inbox each morning. And for an exclusive look at how the biggest stories on our show come together, subscribe to our newsletter. Background reading: A recent report from the C.D.C. strongly suggested that fully immunized people with so-called breakthrough infections of the Delta variant can spread the virus to others just as readily as unvaccinated people.According to an internal C.D.C. presentation, the Delta variant is much more contagious, more likely to break through protections afforded by the vaccines and may cause more severe disease than other known versions of the virus.For more information on today’s episode, visit nytimes.com/thedaily. Transcripts of each episode will be made available by the next workday.