Carl Goldman tested positive for the new coronavirus after leaving the ship and arriving in the U.S. He is recovering in an isolation unit of the University of Nebraska Medical Center.
Pyongyang says it has mobilized to fight for its "national survival." Experts say North Korea's track record of fighting epidemics does not bode well for its handling of the coronavirus outbreak.
A small study from China finds infected babies have only mild symptoms. And a study of pregnant women who were infected with the virus evaluates whether it can be passed on to their babies.
Some factories are beginning to reopen, but labor shortages continue. In a recent poll of U.S. companies by Shanghai's American Chamber of Commerce, 78% said they lack staff to resume full production.
The new coronavirus has spurred biotech labs in universities and companies to try to find new approaches to stopping the virus — from blocking its key enzymes to interfering with its genetics.
U.S. officials said the people infected with the virus were isolated from the other passengers. The two evacuation flights landed at military bases in California and Texas.