Health experts plead: wear a mask

Surge accelerating in almost all 50 states; universal face coverings could prevent 10s of thousands of deaths by end of the year; indoor activities, private gatherings seen as biggest risks

The Covid-19 surge is sharpening to the point that nearly all public health experts are sounding the alarm louder than ever. The fear is that people will let their guard down and visit family or friends for Thanksgiving — precisely the kind of activities that are fueling new cases in California and other states.

Here are today’s COVID-19 top stories: