How soon will the U.S. know if another surge is coming following increases in other parts of the world in part due to the highly-transmissible BA.2 variant?.
For the first time since the end of Illinois' mask mandate, residents in all 102 counties can safely visit public indoor spaces without wearing masks, data.
With COVID metrics rising in other parts of the world, what does that signal for the United States? Chicago's top doctor weighed in on what's happening in.