Nat Commun: What's going on with America's new crown?

Currently, the first COVID-19-related death in the United States occurred on February 6 in Santa Clara County, California.
Throughout March 2020, U.S. state governments implemented non-drug interventions (NPIs), such as school closures and home-on-call, to limit the spread of SARS-CoV-2 and to ensure that the number of severe CASES of COVID-19 does not exceed the capacity of the health system.
April 2020, the U.S. (US) attributed coVID-19 deaths to more deaths than Italy.
using event study models by Courtemanche et al. to determine that this NPIs have succeeded in reducing the growth rate of COVID-19 cases in U.S. counties.
as of June 1, 2020, the U.S. Centers for Disease Control and Prevention reported 104,232 confirmed or possible COVID-19-related deaths in the United States.
more than double the number of deaths reported in the next most affected country.
recently, researchers at Nature Communications, using publicly available death data, jointly modeled outbreaks at the state level in the United States within the framework of the Bayesis-level semi-mechanism.
for each state, the researchers estimated the number of individuals infected, the number of individuals currently contagious, and the number of reproductions over time (the average number of secondary infections caused by infected people).
researchers used changes in mobility to grasp the effects of non-drug interventions and other behavioral changes on the rate at which SARS-CoV-2 spreads.
estimates that on June 1st Rt was below 1 in only 23 states.
also estimate that 3.7 percent of the U.S. population (3.4-4.0 percent) has been infected, with large differences between states and about 0.01 percent of the population contagious.
the study showed good 3-week death model prediction, small error and high confidence interval coverage.
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