Flood victims of the Lalbagh area line up wait for relief materials at centre in capital Dhaka, August 13, 2007. In Bangladesh, one of the world's poorest countries, more than 400 people have been killed since flooding began in mid-July. On Monday, officials voiced concerns about diarrhoea and other diseases. Nearly 45,000 people have been treated in hospitals and clinics across the country since late July.