North Korea’s admission that it is battling an “explosive” COVID-19 outbreak raised concerns that the virus could devastate a country with an under-resourced health system, limited testing capabilities, and no vaccine program.

The American Medical Association (AMA) on January 5 criticized the government’s guidelines on quarantine and isolation in the United States, saying the guidance was “confusing” and risked further spread of COVID-19.

The U.S. Centers for Disease Control and Prevention (CDC) on January 4 backed the agency’s week-old guidance for people seeking to end their COVID-19 isolation at five days, adding they could take a rapid antigen test if they want to and can access one, but is not requiring that.

The U.S. Centers for Disease Control and Prevention (CDC) said on May 7 that U.S.-bound international air travelers can meet Covid-19 entry requirements using certain self-administered tests.

U.S. cases of the novel coronavirus surpassed six million as many states in the Midwest reported increasing infections, according to a Reuters tally.