Issues as food safety, water quality and mosquitoes breeding are witnessed to be spiraling over health authorities in Queensland following the subsidence of the devastating flood waters.

"We know we're going to get a lot of mosquitoes all through Queensland, wherever there's been floodwater", Jeanette Young, chief health officer since 2005, was quoted as saying in a telephone interview yesterday. "As it recedes, it leaves pockets that are perfect for breeding mosquitoes".

Over 70 towns and cities in the northeastern of the nation have been hit by the floodwaters, reported the state's chief health officer.

However, acting Federal Health Minister Mark Butler today highlighted that states and territories had promised to extend full assistance and expertise in environmental and mental health to the officers to help combat the situation.

Residents returning back to their homes in the flood ridden areas following its clearance have been told not to walk through stagnant water because it was almost certainly contaminated.

The Royal Australian and New Zealand College of Psychiatrists have cautioned residents against a likely rise in mental illness after the devastating floods. It is reported that special arrangements have also been extended in a view to offer medicines and care for the aged in flood-affected areas.