Wed May 27, 12:05 am ET
SYDNEY (AFP) ? Australian authorities defended a decision to let 2,000 passengers off a cruise ship where there was a suspected swine flu outbreak, as the confirmed cases here more than doubled in 24 hours.
Despite suspicions a number of people on board the Pacific Dawn liner were suffering swine flu more than 2,000 passengers were allowed to return to the community Monday and told to self-quarantine for seven days.
A total of 14 passengers have since been diagnosed with the deadly virus, with 172 people on board showing flu-like symptoms or reporting contact with someone who did.
Health Minister Nicola Roxon said border controls would be tightened at Australia's ports but defended the release of Pacific Dawn passengers, as the number of confirmed cases nation-wide hit 59.
"I understand that there are some questions being asked and some level of frustration that perhaps people should have been held while more tests were being done," Roxon said.
"We have to try and have a proportionate response, and holding 2,000 people or trying to put them in some sort of isolated circumstances would have its own difficulties."
"The advice that we have so far is for us not to restrict internal travel in any way."
New South Wales state Health Minister John Della Bosca said quarantine officials did "exactly the right thing" but conceded that screening criteria would have to change to account for person-to-person transmission.
"What I think is important to realise is that (infected passengers) weren't presenting as suspect cases according to the criteria at the time," Della Bosca told state radio.
"The criteria is going to have to change ... now we do have evidence of community transmission."
The Pacific Dawn sailed for the Great Barrier Reef with a fresh group of guests late Monday, and Roxon said authorities were closely monitoring the health of those on board.
"This is going to be a changing situation, I expect we will have some significant increasing numbers (of cases) over the next couple of days," she said.
Worldwide A(H1N1) cases soared to almost 13,000 Tuesday, infecting 46 countries and killing 92 people, 85 of them in Mexico, where the outbreak began last month.
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