Even for vaccinated people, now is the time for masks and testing, public health experts say

As the highly transmissible delta variant sweeps across every state in the country as the dominant strain of Covid-19, public health experts warn now is not the time to ditch masks or forgo testing.

If anything, the United States, particularly in areas where vaccination rates have stalled and coronavirus cases are rising, is at an urgent juncture in the pandemic, in which continued mask-wearing and testing are pivotal because of how quickly the variant has been spreading, the experts say.

"I think it's critical to be masking indoors no matter where you live,"...