After hovering at stubbornly high levels or increasing over the past two months, average daily cases in Massachusetts, Minnesota, New Jersey, Illinois, and other states in the Midwest and Northeast have started to fall, providing a breath of relief that the communities are past their most recent peaks. Crucially, new infections in Michigan — which experienced the worst of the spring spikes, with some of its highest Covid-19 levels of the entire pandemic occurring in recent weeks — have started declining, with hospitalizations also starting to tick down.