NJ has had a pretty large outbreak, and though belatedly, most folks there finally got on board with wearing masks. I don't recall exactly when that changed, but I talk to family in NJ every weekend, and frequently would ask about mask wearing. I'd guess the shift came in late April/early May. And was phased in. But it really took a long time. Seemed rather glacial to me.
I've also tried to impress upon my elderly parents in NJ that the numbers they see in their daily newspaper (they have a physical paper copy delivered) are test confirmed cases and to multiply x 10 to get estimated Actual Cases. To remember there are plenty of undetected infected folks walking around.
NJ was just set to allow restaurant dining, but decided to postpone that opening move.
In Shanghai, mask wearing has been on-going since Jan 20 or so. That first week, there was a scramble to get masks. In June as the weather warmed up and the threat receded greatly, mask wearing started to ease up significantly. Mid-June, I estimated around 35% or so weren't wearing masks and it was common to see folks on the street with masks down on their chin.
But the mini-outbreak in Beijing has changed things. This week I'd estimate mask wearing is back up to 90% and I even ran into a few places that reinstated temp checks before you could enter. I hadn't seen temp checks since probably April. Last week, I remarked to a friend that the Beijing outbreak was probably a good thing for SH as folks were just starting to get complacent. And a week later, Shanghai is indeed back on alert, back in protection mode.