“The Delta variant is by far the most contagious variant of this virus we have seen in the entire pandemic,” Dr. Ashish Jha said yesterday. “The good news is the data suggests that, if you’ve been fully vaccinated, you remain protected, that the vaccines hold up.” The clearest place to see this pattern is Britain, where the Delta variant has spread widely and where the vaccination rate is high. In Britain, there is “still no sign of increase in deaths, well after the strain has become dominant,” as Dr. Eric Topol of the Scripps Research Translational Institute noted... Persuading more Americans to get vaccinated will save some of their lives. And a more rapid global vaccination program can save millions of lives around the world. Delta already appears to be at least partly responsible for rising case counts in several African countries, Russia, Ontario and elsewhere. “If you’re fully vaxxed, I wouldn’t be too worried, especially if you’re in a highly vaxxed region,” Wachter wrote. “If you’re not vaccinated: I’d be afraid. Maybe even very afraid.”