“Many key questions about SARS-2 and the disease it causes, Covid-19, continue to bedevil scientists.” Stat News’ Helen Branswell asked the experts what their key questions are. Here are the top ones.

+ “The police-enforced wearing of protective masks outdoors, ordered a year ago for non-exercise activities, was scrapped. But the Health Ministry said the requirement still applied for indoor public spaces and urged citizens to keep masks to hand.” ‘A very good weird’: Israel drops outdoor COVID mask order. After more than a year, I walked into an indoor space with others sans mask. I just forgot. I see this as a key indicator we’re gonna be done with this soon. Or maybe it was just that it was 4/20…

+ The geographic differences from county to county and country to country are astounding. Japan to declare state of emergency in Tokyo amid pre-Olympics Covid surge. And in photos: India being overrun by its massive virus surge.