In Louisiana, the official death toll climbed to 799, the state's Department of Health and Hospitals said.

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Louisiana's Department of Health and Hospitals reported Thursday that the remains of 170 people have yet to be identified.

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Sunday, the Louisiana Department of Health and Hospitals said the death toll in Louisiana from the Category 4 hurricane was 646.

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But Kenyon International Emergency Services, the private company hired by the state to remove the bodies, is on call if any other body is found, said Bob Johannessen, a spokesman with the state Department of Health and Hospitals.

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The number includes drowning victims as well as other people who died from conditions caused by the storm, such as patients on life support who died when the power was lost, according to a release from the Louisiana Department of Health and Hospitals.

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The Department of Health issued fresh guidance on antibiotic prescribing in hospitals on Friday, with doctors and nurses being urged to "think twice" before offering them to patients.

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The Department of Health said the powers would bring care in to line with other services such as hospitals and holiday operators, which have procedures to check on the "financial health" of organisations.

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He has lived in the U.S. since at least 1980, holding an internship, residency and fellowship at hospitals in Connecticut, Missouri and Massachusetts, according to records filed with the Florida Department of Health.

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Dr David Webb, from the Philadelphia Department of Public Health and colleagues, examined the medical records of 37, 000 women who had given birth at more than 25 hospitals in the city between 1994 and 1997.

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