Thousands evacuated as flood levels continue to rise in Australia . Three people have died including three - year - old boy hit by tree . Hospital being built in hard - hit town of Bundaberg . People are stranded from their helicopters .
Thousands evacuated as flood waters continue to rise in Australia . Four people have died including three-year-old boy hit by tree . Hospital being evacuated in hard-hit town of Bundaberg . Helicopters pluck stranded from their rooftops .