More than four states in the US have yet to report a coronavirus case during the pandemic .
One state had a presumptive case and only 4 states had no cases yet ( Alabama , Alaska , Idaho , and West Virginia ) .The federal government 's strategy has focused largely on travelers from regions where infections have been widespread ; since January 31 , 2020 , Americans returning home after traveling in China 's Hubei Province have been required to submit to a 14-day quarantine .
2020 coronavirus pandemic in the United States