Quarantining Japan cruise ship passengers led to more coronavirus cases: Study

Updated on Feb 29, 2020 11:30 AM IST

Passengers who showed signs of illness were separated from other passengers on board. When the quarantine in Yokohama was removed and passengers could finally disembark, a total of 619 passengers had been infected by the coronavirus.

A bus arrives near the cruise ship Diamond Princess, where dozens of passengers were tested positive for coronavirus, at Daikoku Pier Cruise Terminal in Yokohama, south of Tokyo, Japan(REUTERS FILLLE)
A bus arrives near the cruise ship Diamond Princess, where dozens of passengers were tested positive for coronavirus, at Daikoku Pier Cruise Terminal in Yokohama, south of Tokyo, Japan(REUTERS FILLLE)
Umea [Sweden] | ByAsian News International

The cruise ship Diamond Princess was quarantined for over two weeks resulting in more coronavirus infected passengers than if they would have disembarked immediately, revealed a study conducted at Umea University in Sweden.

“The infection rate onboard the vessel was about four times higher than what can be seen on land in the worst infected areas of China. A probable cause is how close people stay to one another on board a vessel,” says Joacim Rocklov, Professor of epidemiology at Umea University and principal author of the article.

After a person travelling on the cruise ship Diamond Princess disembarked in Hong Kong and was tested positive for the coronavirus, Japanese authorities decided to disallow the 3,700 passengers on board to leave the ship when it reached Yokohama. The ship was hence put in quarantine until 19 February.

Passengers who showed signs of illness were separated from other passengers on board. When the quarantine in Yokohama was removed and passengers could finally disembark, a total of 619 passengers had been infected by the coronavirus.

“If the ship had been immediately evacuated upon arrival in Yokohama, and the passengers who tested positive for the coronavirus and potential others in the risk zone had been taken care of, the scenario would have looked quite different. Our calculations show that only around 70 passengers would have been infected. A number that greatly falls short of the over 600 passengers the quarantine resulted in. The precautionary measure of putting the entire ship under quarantine was understandable, but due to the high risk of transmission on the ship, the decision is now questionable,” says Joacim Rocklov.

At the same time, the study also shows that if the precautionary measures of isolating potential carriers had not been carried out on board, another 2,300 people would have been infected.

Get Latest World Newsalong with Latest Newsfrom Indiaat Hindustan Times.
SHARE THIS ARTICLE ON
SHARE
Story Saved
×
Saved Articles
Following
My Reads
My Offers
Sign out
New Delhi 0C
Wednesday, December 07, 2022
Start 15 Days Free Trial Subscribe Now
Register Free and get Exciting Deals