The earlier lockdown measures are imposed, the greater the impact, hence the comparatively excellent numbers from Finland. Sweden has long held denial of asymptomatic transmission (especially by Tegnell, even in this article), which we've learned is categorically wrong. The IHME model has been considered notoriously optimistic, as the US number of deaths has been rising but the US peak is reported as 1 week ago. The IHME model assumes a full lockdown in the US until August, which has already been violated by a number of US states this week.