STAT
The US, as a whole, is still in good shape for the summer of reunions and revived activities. But for those who haven’t been immunized against Covid-19, there is a new concern: the emergence of yet another coronavirus variant, one with a nasty combination of features that makes it even more dangerous than the other strains that have caused global alarms. The variant, known as Delta, was first spotted in India and helped power that country’s recent explosive outbreaks.