Rob Stein - NPR
Delta variant of the coronavirus could dominate in U.S. within weeks
The variant, first identified in India, is the most contagious yet and, among those not yet vaccinated, may trigger serious illness in more people than other variants do, say scientists tracking the spread of infection.
U.S. vaccinations may be reaching a tipping point to stop the virus, experts say
While some researchers says it's still too soon to know for sure, a growing number of epidemiologists, infectious disease researchers and public health experts think the country might have reached — or be about to reach — that crucial inflection point.