Less than 6 states have yet to register a case of coronavirus .
Confirmed cases had appeared in 42 out of the 50 U.S. states , and Washington , D.C. Two other states had presumptive cases and only 5 states had no cases yet ( Alabama , Alaska , Idaho , Maine , and West Virginia ) .On January 31 , 2020 , the U.S. government began to require Americans returning home after traveling in China 's Hubei Province to submit to a 14-day quarantine .
2020 coronavirus pandemic in the United States