Haiti water shortage 'critical'

Clean water is the most urgent priority, aid workers say

The contamination of water supplies by rotting human and animal corpses was the greatest danger, said Gordon Weiss, emergencies spokesman at Unicef.

"What we fear most is the spread of water-borne diseases - they can kill children very quickly," he told BBC News Online.

The distribution of clean water, purification chemicals, oral rehydration salts, basic medical supplies and replacement school materials was the priority for Unicef, he said.