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Thousands of people have spent the past two weeks in quarantine on the Diamond Princess cruise ship. Photograph: Athit Perawongmetha\/Reuters<\/p><\/div>\n
Quarantine conditions imposed on a stricken ship in\u00a0Japan<\/a>\u00a0are both morally dubious and appear counterproductive, according to health experts who fear the vessel has become an incubator for the coronavirus Covid-19.<\/p>\n Thousands of people have spent the past two weeks stuck onboard the Diamond Princess cruise ship, which now accounts for the biggest cluster of cases outside mainland China. More than 540 passengers in the Japanese port Yokohama are confirmed to have the virus, after 88 additional cases were confirmed on Tuesday.<\/p>\n Experts are still trying to understand how easily the virus transmits, but there are fears that the conditions on the ship \u2013 quarantined after a passenger who disembarked in Hong Kong tested positive \u2013 have allowed the disease to spread more rapidly.<\/p>\n Roojin Habibi, a lawyer specialising in global health law, said the quarantine measure was an experiment carried out in real-time, and that it had turned the ship into \u201ca boiling pot of transmission\u201d.<\/p>\n On Tuesday morning, the UK government, which has come under increased pressure to intervene, said that it was working to organise an evacuation flight for 74 British passengers. The announcement came after the US chartered a flight on Sunday and several other countries announced plans to do so. About 200 Australian passengers were expected to be evacuated on a Qantas flight on Wednesday and taken to a location on the Australian mainland where they will be isolated for two weeks.<\/p>\n Dr Clare Wenham, an assistant professor of global health policy at the London School of Economics and Political Science, said the\u00a0evacuation of US citizens<\/a>\u00a0raised broader questions about whether it was really necessary for people to remain on the ship. \u201cThe Americans are being allowed to disembark in some form to get to the airport. If that\u2019s deemed safe, why can\u2019t everyone else get off and be put in quarantine elsewhere?\u201d<\/p>\n The decision to quarantine about 3,700 crew and passengers on the vessel was morally dubious, she added.<\/p>\n Japanese officials have defended the quarantine, and say that precautions have been taken to stop the disease from spreading on the ship. These includes providing staff with masks, encouraging handwashing and closing communal bars and restaurants.<\/p>\n The vast majority of people who catch the virus will recover, according to the World Health Organization,\u00a0which has confirmed that data<\/a>\u00a0from the Chinese province of Hubei, the centre of the outbreak, suggested about 2% of cases were fatal.<\/p>\n Dr Michael Ryan, the chief of emergencies at WHO, said last week that countries should respect the human rights of travellers. \u201cIt\u2019s really important that there\u2019s an appropriate risk management approach being taken here,\u201d he said.<\/p>\n It is not clear if all passengers on the Diamond Princess will face further quarantine in their home countries. On Monday, David Abel, a passenger who has posted video diaries from the ship, spoke about the psychological impact on those affected. \u201cIt\u2019s all getting to us now \u2013 not just me, other passengers as well. It\u2019s the not-knowing factor that is the real challenge,\u201d he said in a YouTube video. On Tuesday morning he said he\u00a0had been told that he had tested positive<\/a>, but later said he doubted the results.<\/p>\n For the past two weeks, passengers have been mostly confined to their cabins, while staff wearing masks have delivered food to their rooms. The ship\u2019s crew members, meanwhile, have reportedly continued to share bathrooms and eat together, which has prompted questions about the effectiveness of the quarantine measures.<\/p>\n Mark Eccleston-Turner, a lecturer in law at Keele University specialising in global health law, said\u00a0<\/strong>conditions on the ship were worrying and\u00a0<\/strong>said that human rights appeared to have become \u201ca secondary concern during this outbreak\u201d.<\/p>\n Under the International Covenant on Civil and Political Rights, any restrictions on civil liberties that are introduced in the name of public health must meet certain requirements to be considered lawful and legitimate, he said.<\/p>\n Such measures should not be arbitrary or discriminatory, they must be deemed strictly necessary, the least intrusive and restrictive option available and, among other things, based on scientific evidence.<\/p>\n While quarantines can meet these criteria, he said, the measures imposed on the ship\u00a0<\/em>do not appear to do so. \u201cIt is quite arbitrary in nature. Typically when you quarantine people in public health to prevent onward spread of a virus, you are quarantining people who you know have an infectious agent \u2013 people you know are unwell. The vast majority of people on this cruise ship are not infected and were not infected at the point that the quarantine began,\u201d he said.<\/p>\n It was disappointing, he added, that the World Health Organization had not taken are stronger stance against such policies \u2013 particularly the wide-ranging restrictions introduced in China.<\/p>\n There are fears about the long-term impact of such policies on future outbreaks. Habibi, who is also a research fellow at the the Global Strategy Lab at York University in Canada, added: \u201cBy taking such dramatic measures, measures that are irrational and rooted in fear, we are basically dissuading the next country that has an outbreak in their borders from coming out to publicly report that fact to the world.\u201d<\/p>\n Paul Hunter, professor in medicine at the University of East Anglia, said that while the quarantine seems to have stopped passengers from transmitting infections further around the world, the high number of cases reported on board over recent days suggests that measures to stop the spread on the ship had been ineffective.<\/p>\n \u201cHow and when these new cases acquired their infections is not currently clear so the reasons how and indeed when this transmission occurred in not yet known. The most likely route is direct person to person transmission when people are close to an infected person, but with currently publicly available information it is not possible to rule out other issues at this stage,\u201d he said.<\/p>\n Efforts by government to evacuate affected citizens would understandably be welcomed by those on board, he said, but he added \u201csuch repatriation is not free from risks\u201d.<\/p>\n \u201cConsiderable care needs to be made to ensure that the passengers do not transmit infection between themselves or to cabin crew during the flight home and once back on home soil they do not act as a focus for the spread of the disease into their home countries \u2013 any returning passengers may be put in quarantine on their return.\u201d<\/p>\n