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almost 500 passengers aboard the Diamond Princess sail ship — where thenew coronavirus is circulate — were allow to debark the watercraft today ( Feb. 19 ) after officials declared that those passengers had successfully completed a two - week quarantine .

However , some expert are concerned that this quarantine was not effective and that the turn passenger may not be free of the virus , according to news reports .

In Brief

The beleaguered ship has been under quarantine and docked in Yokohama , Japan , since Feb. 3 , with some 3,700 passengers and bunch on board . But during that time , 621 passenger have been infected with the newcoronavirus , leading to headache that measures to forestall the cattle farm of the computer virus on the ship were not adequate .

— See live updates on the new coronavirus — How deadly is COVID-19?—How does the new coronavirus compare with flu?—Why are children ' missing ' from coronavirus outbreak ?

Indeed , the U.S. Centers for Disease Control and Prevention ( CDC ) announced on Tuesday ( Feb. 18 ) that all passenger and crew still on the ship would not be allowed to return to the U.S. for at least 14 days after lead the ship . ( The CDC has already evacuated several hundred American passenger from the ship , and those rider are presently under quarantine at U.S. military bases . )

A member of the media wears a face mask while walking past the Diamond Princess cruise ship at Daikoku Pier in Yokohama, Japan, on Feb. 10, 2020.

" While the [ ship ] quarantine potentially confer a substantial public wellness benefit in slowing transmitting , CDC ’s judgment is that it may not have been sufficient to keep transmission [ of coronavirus ] among individual on the ship , " the agencysaid in a assertion . " CDC think the rate of new infections on control panel … stand for an ongoing risk . "

What ’s more , a Nipponese infectious - disease specialiser who visited the ship has reported that   measures to control viral spread on circuit card were " completely disorderly , " according toThe New York Times . With attentiveness to the passengers leaving the ship today , " I would not be surprised if they spread transmission , " the medical specialist , Dr. Kentaro Iwata , of Kobe University , tell the Times .

However , Nipponese official said that they " made the maximal consideration to secure the wellness of passenger and bunch , " the Times describe .

An illustration of a coronavirus.

Still , Japan ’s health minister , Katsunobu Kato , exhort passenger go out the ship to limit their public junket and to monitor their health in the conform to days , according to the Times .

More passengers are set to go out the ship in the next few day .

Originally published onLive scientific discipline .

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