The struggle for survival is becoming a race against time for some desperate Haitians.
Widespread looting has broken out as the needy await the arrival of food and medical supplies.
Some people have set up roadblocks with corpses in some parts of Port-au-Prince, in protest at the failure of aid to get through.
The rescue effort has been held up by earthquake-wrecked facilities and heavy machinery at airports and docks and on the streets. It is becoming all too clear that time is rapidly running out.
With the full extent of the destruction still to emerge, the Haitian Red Cross says it believes up to 50,000 people have died and more than three million others – a third of the country’s population – have been hurt or left homeless.
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