U.S. health authorities say US citizens on board a cruise ship hit by the new coronavirus outbreak are restricted from returning to their country for at least 14 days after they disembark.
The Diamond Princess was put under quarantine by the Japanese government while being docked at Yokohama Port near Tokyo.
While more than 300 US citizens have been evacuated to the United States, about 100 others remain on board or in hospitals in Japan.
Passengers and crew who tested negative for the virus and show no symptoms can start to leave the ship on Wednesday as the 14-day quarantine period ended.
The U.S. Centers for Disease Control and Prevention, however, said in a statement on Tuesday that U.S. passengers, crew and those in hospitals will be required to wait another 14 days before returning home. They will be permitted to board flights to the U.S. if they show no symptoms and do not test positive for the virus during this time.
The CDC added that if individuals from the cruise arrive in the U.S. before the 14-day period ends, they will be subject to a mandatory quarantine in the U.S.
The CDC said that there may be additional cases of infection among the remaining passengers on board the Diamond Princess, because of their high-risk exposure.