The International Federation of Red Cross and Red Crescent Societies on Monday called for a political solution for the Rohingya refugees living in overcrowded camps in Bangladesh.
Hundreds of thousands of the mostly Muslim minority have fled sectarian violence in neighboring Myanmar since last August.
"This is grossly inadequate and completely undignified," IFRC President Francesco Rocca said, who pointed out that the makeshift shelters made of bamboo and plastic sheeting were extremely exposed to rain and storms.
"We are simply calling for a political solution to this crisis. People who fled from Rakhine cannot be expected to face another year in these conditions," he added.
Over 700,000 Rohingyas left Myanmar in the second half of 2017 following a wave of violence targeting their communities by Burmese security forces.
In a statement, the IFRC said the Rohingya refugees in Bangladesh were living in some of the most "cramped and dangerously exposed" conditions in the world, with a population density of over 60,000 people per square kilometre.
The organization is engaged in a dialogue with the Bangladeshi government "to allow the construction of more sturdy shelters, and better community infrastructure like toilets, better water systems and drainage," Feroz Salah Uddin, Secretary General of the Bangladesh Red Crescent Society said.
In Nov. 2017, Bangladesh and Myanmar signed an agreement for the repatriation of Rohingyas, who are denied citizenship by the Myanmar authorities, although it has yet to be implemented.