New coronavirus cases are down across the US about 12% on average over the last seven days compared to the previous week, but the nation is still averaging more than 900 deaths a day. According to an analysis of data from Johns Hopkins University, cases are steadily declining in states hard-hit by Covid-19. Compared to last week, new cases are down in Arizona about 36%, California and Texas have seen a decrease of 29%, and Florida's numbers are down 26%.