April 22, 2020 / By Christina Maxouris, Eliott C. McLaughlin and Arman Azad, CNN
(CNN) – With a handful of states reopening parts of their economies, a coronavirus model routinely cited by the White House warns that no state should be opening before May 1.
South Carolina and Georgia, which are leading the pack to get their economic engines humming again this week, should not open until June 5 and June 19, respectively, according to the model maintained by the Institute for Health Metrics and Evaluation at the University of Washington. It was updated Tuesday. 
Montana has the best forecast at May 1, while the only other states that should open by May 10, the model says, are Alaska, Hawaii, North Carolina, Vermont and West Virginia.North Carolina is the only of the six states with more than 1,000 cases, as of Wednesday afternoon.
About half the states in the country should remain closed until May 25 or later, with Arizona (June 23), South Dakota (June 25), Iowa (June 26), Nebraska (June 30) and North Dakota (July 12) rounding out the bottom of the list.