Bangladesh's government says the nation's devastating floods have caused nearly $7bn worth of damage.
Water in Dhaka is getting dirtier with untreated sewage
The number of dead is now around 500 and there are fears that unusually high tides over the coming days will stop the rivers receding.
The flood water rose again in parts of the capital, Dhaka, on Thursday as heavy rain fell on the city.
Across the country, millions remain homeless or stranded, camping out on tiny islands formed by raised roads.
The water is getting dirtier in Dhaka; 500,000 cubic metres of untreated sewage is escaping into the water every day.
It is being mixed with industrial waste from factories that is normally carried away by the rivers.
Doctors are now warning of an epidemic of diarrhoea.
At a city hospital today, patients were being treated in extra temporary wards set up in sheds.
The disaster management minister, Chowdhury Kamal Ibne Yusuf, has said the country has enough food and medical supplies for now but will need international help to rebuild roads, bridges and schools.
Flood forecasters are warning that the rivers may not recede for the next few days.
The full moon will cause unusually high tides in the Bay of Bengal, stopping the flow of water to the sea.